KR20190024617A - Home Appliance - Google Patents

Abstract

The present disclosure relates to a home appliance including a dual door which prevents dual opening. A home appliance includes: a body including an accommodation space opened toward one side; a first door coupled to the body to be rotatable so as to open and close the accommodation space and including an opening connected to the accommodation space; a second door coupled to the first door to be rotatable so as to open and close the opening; and a locking device allowing the first door to be fixed to or separated from the body or allowing the second door to be fixed to or separated from the first door such that the first door and the second door are selectively rotated. The locking device includes: a main ring unit provided in the body; an operation lever which separates the second door from the first door through pressing; and a dual opening preventing member which maintains fixing of the second door to the first door when the operation lever is pressed in a state in which the first door is opened.

Description

Home Appliance}

The present disclosure relates to household appliances.

Home appliances such as an oven, a dishwasher, a refrigerator, a washing machine, etc. have a receiving space therein and can perform a corresponding function in the receiving space.

For example, the oven includes a cooking chamber for cooking food, a dishwasher having a washing chamber for washing dishes, a refrigerator having a storage room for storing food, and a washing machine for washing laundry And a laundry room.

In addition, the above-described home appliance has a door that can open and close the accommodation space.

Background Art [0002] Recent electronic appliances include a double door capable of selectively opening and closing all or a part of a receiving space to improve the availability and efficiency of the receiving space.

The home appliance including the double door includes a main door (first door) capable of opening and closing the entire accommodating space and an auxiliary door (second door) capable of opening and closing a part of the accommodating space by opening and closing the opening of the main door do.

As a result, the household appliances having the double doors can selectively open and close the entire or a part of the accommodation space, and use the accommodation space more efficiently.

For example, an oven having a double door includes a main door capable of opening and closing the entire cooking chamber and an auxiliary door capable of opening and closing an opening of the main door. Through the main door and the auxiliary door, the entire or part of the cooking chamber can be selectively opened and closed, the cooking state can be checked through the opening and closing of the auxiliary door, or only a part of the cooking chamber can be used without heat loss.

However, conventional home appliances having a double door have a disadvantage in that the auxiliary door is unnecessarily opened in a state where the main door is opened, which may cause inconvenience to the user.

The present disclosure relates to a home appliance having a double door in which double opening is prevented.

According to an aspect of the present disclosure, a household appliance includes: a body having an accommodation space opened toward one side; A first door rotatably coupled to the main body to open and close the receiving space, the first door having an opening connected to the receiving space; A second door rotatably coupled to the first door to open and close the opening; And a locking device for allowing the first door to be fixed or separated to the main body so that the first door and the second door selectively rotate or to fix or separate the second door to the first door, The locking device includes: a main ring unit provided in the main body; An operating lever for separating the second door from the first door by pressurization; And a double open prevention member for allowing the second door to remain fixed with respect to the first door when the operation lever is pressed in a state that the first door is opened.

The locking device may include: a first locking unit provided on the first door and selectively coupled to the main ring unit; And a second locking unit provided on the second door, the second locking unit being selectively coupled to the first locking unit, wherein the operating lever is installed on the second door, The second locking unit can be separated from the first locking unit.

The main ring unit may further include: a body provided on the main body; A main loop selectively coupled to the first locking unit; And a pair of pressing members installed on the lower side of the main ring and installed to move up and down with respect to the body.

In addition, the pair of pressing members may be formed of a torsion spring, one end of the torsion spring may be fixed to the body, and the other end of the torsion spring contacting the first locking unit may include an inclined portion.

The first locking unit may include: a first holder installed on the first door; A first hook member rotatably installed in the first holder; And a first elastic member that applies an elastic force to the first hook member such that the first hook member rotates in a first rotation direction in which the first hook member engages with the main loop unit, A second holder installed on the door; A second hook member rotatably installed in the second holder; And a second elastic member for applying an elastic force to the second hook member such that the second hook member rotates in the first rotation direction, and the second hook member has a first hook member and a second hook member, The first hook member may be elastically supported so that the first hook member is separated from the main hook unit.

Further, the double opening prevention member may include: a rotation ring member rotatably installed in the first holder; And a third elastic member that applies an elastic force to the rotation ring member such that the rotation ring member rotates in the first rotation direction in which the rotation hook member engages with the second hook member.

Further, when the first and second doors are closed, the rotating ring member is pressed by the main ring unit in a state of being engaged with the second hook member, and when the first door is opened, And can be elastically supported by the second hook member.

Further, the second hook member can be rotated in the second rotation direction separated from the rotation ring member by being pressed by the operation lever.

In addition, when the operation lever is pressed in a state in which the first and second doors are closed, the second hook member rotates in the second rotation direction to depart from the rotation ring member, And can rotate in the rotational direction to engage with the main annular unit.

In addition, when the first door is opened and the operation lever is pressed while the second door is closed, the rotation ring member is rotated in the first rotation state in a state of being engaged with the second hook member rotating in the second rotation direction Direction.

The elastic force of the second elastic member may be greater than the sum of the elastic force of the first elastic member and the elastic force of the third elastic member.

Further, the operation lever may include: a lever body having a grip portion and a pressing portion extending from one end of the grip portion; And a lever case rotatably mounted on the lever body, wherein the lever body can be rotated so that the pressing portion presses the second hook member when the grip portion is pressed.

Further, it may further include a door handle installed on the second door, and the operation lever may be installed on the door handle.

The first locking unit may include first and second locking holes formed in the first door and first and second locking holes formed in the first locking hole and the second locking hole, And a first holder having a main ring unit, the main ring unit comprising: a body provided in the main body; And a first ring member rotatably installed on the body and rotating in a first rotation direction for engaging with the first locking projection and a second rotation direction for being separated from the first locking projection, A second holder installed on the second door; And a second ring member rotatably installed in the second holder and rotating in a third rotational direction engaged with the second locking projection and a fourth rotational direction separated from the second locking projection, The member may interfere with the second ring member in a state in which the first and second doors are closed, thereby blocking the rotation of the second ring member in the fourth rotation direction.

In addition, when the first and second doors are pressed by the operation lever in the closed state, interference with the second annular member is released and interfered with the first annular member, Thereby preventing the member from rotating in the second rotation direction.

Further, the double opening prevention member can block the operation of the operation lever when the first door is opened.

According to another aspect of the present disclosure, there is provided a household appliance including a main body, a first door rotatably installed in the main body and including an opening, and a second door rotatably installed in the first door to open and close the opening, Wherein the first door is fixed to or detached from the main body or the second door is fixed or separated from the first door, A first locking unit installed to selectively fix the first door to the main body; A second locking unit installed on the second door and selectively coupled to the first locking unit; An operation lever installed on the second door to press the second lock unit to separate the second lock unit from the first door; And a double opening prevention member for maintaining the state where the second door is coupled to the first door when the operation lever is pressed while the first door is opened.

According to another aspect of the present disclosure, there is provided a household appliance including a main body, a first door rotatably installed in the main body and including an opening, and a second door rotatably installed in the first door to open and close the opening, And a locking device for a household appliance which is installed in the main body so that the first door is fixed or separated to the main body or the second door is fixed or separated to the first door, And a main ring unit to which the first door is selectively coupled, wherein the main ring unit comprises: a body provided on the main body; A main loop selectively coupled to a first locking unit provided on the first door; And a pair of pressing members installed on the lower side of the main ring and installed to move up and down with respect to the body.

1 is a perspective view showing an oven as an example of a home appliance according to an embodiment of the present disclosure;
Fig. 2 is a sectional view of the oven shown in Fig. 1 taken along the line " I-I ".
FIG. 3A is an enlarged view of a closed state of the first and second doors of the oven shown in FIG. 2. FIG.
FIG. 3B is a view showing a state in which the first door of the oven shown in FIG. 3A is opened.
3C is a view showing a state in which the second door of the oven shown in FIG. 3A is opened.
4 is a perspective view of the locking device shown in Fig.
Figures 5 and 6 are exploded perspective views of the locking device shown in Figure 4;
7 is a view showing a locking device in a state in which the first and second doors are closed.
8A is a view showing a locking device in a state in which the first door is opened.
8B is a view showing the operation of the locking device when the operating lever is pressed in a state in which the first door is opened.
9A and 9B are views showing the operation of the locking device in the process of opening the second door.
10 is a perspective view of a locking device according to another embodiment of the present disclosure;
11 is a cross-sectional view of the locking device shown in Fig.
12 and 13 are exploded perspective views of the locking device shown in Fig.
14A to 14C are diagrams showing the operation of the locking device in the process of opening the first door.
15A to 15E are diagrams showing the operation of the locking device in the process of opening the second door.
16 is a perspective view of a locking device according to another embodiment of the present disclosure;
17 and 18 are exploded perspective views of the locking device shown in Fig.
FIG. 19 is a perspective view of the main loop unit, the first lock unit, and the second lock unit of the lock device of FIG. 16 viewed from different directions.
20 is a perspective view showing the torsion spring of the main ring unit of the locking device of Fig. 16;
21 is a view showing a locking device in a state in which the first and second doors are closed;
22A is a view showing a locking device in a state in which the first door is opened.
22B is a view showing the operation of the locking device when the operating lever is pressed in a state in which the first door is opened.
23A and 23B are diagrams showing the operation of the locking device in the process of opening the second door.
FIG. 24 is a conceptual view showing another example of the main ring unit used in the locking device of FIG. 16;
25 is a sectional view showing a dishwasher to which a locking device according to an embodiment of the present disclosure is applied.
26 is a perspective view of a refrigerator to which a locking device according to one embodiment of the present disclosure is applied.
FIG. 27 is a perspective view showing a state where the first door of the refrigerator shown in FIG. 26 is opened.
28 is a perspective view showing a state in which the second door of the refrigerator shown in Fig. 26 is opened.
29 is a perspective view of a washing machine to which a locking device according to an embodiment of the present disclosure is applied.
FIG. 30 is a perspective view showing a state in which the first door of the washing machine shown in FIG. 29 is opened.
31 is a perspective view showing a state in which the second door of the washing machine shown in Fig. 29 is opened.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The embodiments described below will be described on the basis of embodiments best suited to understand the technical features of the present disclosure, and the technical features of the present disclosure are not limited by the embodiments described, Illustrate that the present disclosure may be implemented as embodiments.

Accordingly, the present disclosure is capable of various modifications within the scope of the present disclosure through the embodiments described below, and such modified embodiments are within the scope of the present disclosure. In order to facilitate the understanding of the embodiments described below, in the reference numerals shown in the accompanying drawings, among the components having the same function in each embodiment, the related components are denoted by the same or an extension line number. In addition, the accompanying drawings are not necessarily drawn to scale to facilitate understanding of the disclosure, but the dimensions of some of the components may be exaggerated.

Fig. 1 is a perspective view showing an oven 1 as an example of a home electric appliance 1 according to an embodiment of the present disclosure. Fig. 2 is a sectional view of the oven 1 shown in Fig. 1 along a " Cut section.

1, the oven 1 to which the present disclosure is applicable is shown as an example. However, the present disclosure described below is applicable to a variety of household appliances such as a dishwasher, a refrigerator, Lt; / RTI >

Hereinafter, the structure of the oven 1 will be described as an example of the household appliance 1 according to the embodiment of the present disclosure.

1 and 2, the oven 1 includes a main body 10 which forms an outer appearance and first and second doors 21 and 22 which are coupled to the main body 10. [

A control panel 30 is disposed on the upper portion of the main body 10.

The control panel 30 includes an operating portion 31 capable of operating the oven 1 and a display portion 32 displaying operating information of the oven 1.

In addition, a controller (not shown) for controlling the oven 1 may be disposed inside the control panel 30.

The oven 1 has a receiving space 101 which is open toward one side. The accommodating space 101 of the main body 10 may be a cooking chamber 101 in which food is cooked and the cooking chamber 101 may be opened toward the front of the oven 1.

The main body 10 includes a front panel 11 forming a front surface, an upper panel 12 forming an upper surface appearance, a rear panel 13 forming a rear surface, a bottom panel 14 forming a bottom surface, And a side panel 15 that forms an appearance.

The main body 10 can be constructed by combining the front panel 11, the top panel 12, the back panel 13, the bottom panel 14 and the side panel 15 described above, The top panel 12, the back panel 13, the bottom panel 14 and the side panel 15 can be integrally formed with the main body 10.

The cooking chamber 101 is formed in a box shape, and the front surface is opened for food and drink. To this end, the front panel 11 has an opening which is connected to the cooking chamber 101.

The open front face of the cooking chamber 101 can be opened and closed by a first door 21 rotatably connected to the main body 10.

The first door 21 has a size corresponding to the shape of the front surface of the cooking chamber 101 so as to open and close the entire cooking chamber 101.

The lower end of the first door 21 is rotatably connected to the lower end of the front panel 11. The lower end of the first door 21 is connected to the first hinge shaft 211 disposed at the lower end of the front panel 11, As shown in Fig.

The first hinge shaft 211 may be disposed parallel to the bottom surface of the main body 10 through which the first door 21 rotates in the vertical direction about the first hinge shaft 211, 1 and the second cooking chamber 101a, 101b.

The first door 21 is provided with an opening 21S connected to the cooking chamber 101 and the second door 22 is opened to open and close the opening 21S of the first door 21, And is rotatably coupled to the first door 21.

At least one divider 102 may be disposed inside the cooking chamber 101.

The divider 102 may be in the form of a plate arranged to be horizontal with the bottom surface of the cooking chamber 101 and the cooking chamber 101 may be divided into a plurality of cooking chambers by a divider 102.

2, the divider 102 is mounted so as to be horizontal with the bottom surface of the cooking chamber 101 so that the cooking chamber 101 can be divided into a first cooking chamber 101a and a second cooking chamber 101b .

The first cooking chamber 101a may be located on the top of the divider 102 and the second cooking chamber 101b may be located on the bottom of the divider 102. [

The first and second cooking chambers 101a and 101b may be the same or different in size depending on the position of the divider 102. The plurality of the dividers 102 are arranged in the cooking chamber 101 So that it can be divided into three or more cooking chambers.

In addition, the cooking chamber 101 can be constituted by a single cooking chamber 101 without disposing the divider 102.

As described above, the first door 21 includes an opening 21S connected to the cooking chamber 101. [

The opening 21S can be connected to the cooking chamber having the higher frequency of use among the first cooking chamber 101a and the second cooking chamber 101b.

Specifically, the opening 21S of the first door 21 can be opened to be connected to the first cooking chamber 101a, and the second door 22 can be opened to open and close the opening 21S of the first door 21 So as to be rotatable with respect to the first door 21.

Specifically, the lower end of the second door 22 may be rotatably coupled to the second hinge shaft 222 disposed at the lower end of the opening 21S.

The second hinge axis 222 may be disposed parallel to the first hinge axis 211 so that the second door 22 rotates in the vertical direction about the second hinge axis 222, 21S) can be opened or closed. That is, the second door 22 is rotatably coupled to the first door 21, thereby opening or closing the first cooking chamber 101a.

Further, a door handle 221 is coupled to the upper side of the second door 22.

The door handle 221 may be coupled to the front of the second door 22 and a holding space may be formed between the door handle 221 and the second door 22 to facilitate the user's gripping.

Accordingly, the user can open the first door 21 and the second door 22 by pulling the door handle 221 forward while gripping the door handle 221 by putting his / her hand into the holding space.

The shape of the door handle 221 can be changed into various structures that can transmit a force to the second door 22 in a direction in which the second door 22 is opened or closed in addition to the shapes shown in Figs. .

2, the first hinge shaft 211 and the second hinge shaft 222 are disposed parallel to the bottom surface of the main body 10, that is, the bottom panel 14 of the main body 10, The first and second doors 21 and 22 are rotated in the up and down direction to open or close. However, the first and second hinge shafts are disposed perpendicularly to the bottom panel 14, 22 may be opened or closed by rotating in the horizontal direction.

The oven 1 also includes a locking device 1000 for securing or disengaging the second door 22 to the first door 21 so that the first and second doors 21 and 22 selectively rotate.

The structure of the locking device 1000 and the double opening prevention structure of the first and second doors 21 and 22 through the locking device 1000 will be described later.

At least a portion of the first and second doors 21 and 22 may be made of a transparent material such as glass so that the cooking process inside the cooking chamber 101 can be confirmed from the outside.

 At least one rack (rack 40a, 40b) capable of supporting food is arranged inside the cooking chamber 101. [

Specifically, the first rack 40a is disposed in the first cooking chamber 101a, and the second rack 40b is disposed in the second cooking chamber 101b.

The first and second racks 40a and 40b may have a grill structure and are preferably disposed horizontally with the bottom surface of the cooking chamber 101 so that food can be placed thereon.

A heater (50) for heating the air inside the cooking chamber (101) is disposed in the cooking chamber (101).

The heater 50 may be composed of an electric heater or a gas heater according to a heating method.

2, the heater 50 may be provided on the upper side of the first cooking chamber 101a, but the present invention is not limited thereto. The heater 50 may include a plurality of the first and second cooking chambers 101a and 101b, Respectively.

First and second circulation units 60a and 60b for circulating air in the first and second cooking chambers 101a and 101b are disposed on the rear surfaces of the first and second cooking chambers 101a and 101b, respectively.

The first circulation unit 60a includes a first circulation motor 62a and a first cooking chamber 101a which are coupled with the first circulation fan 61a and the first circulation fan 61a to rotate the first circulation fan 61a, And a first circulation fan cover 63a disposed between the rear surface of the first circulation fan 61a and the first circulation fan 61a.

The first circulating fan cover 63a includes a plurality of through holes through which air can pass.

The first circulation fan 62a rotates to rotate the first circulation fan 61a and the air in the first cooking chamber 101a conveys by the rotation of the first circulation fan 61a. Thereby, the air in the first cooking cavity 101a can be uniformly heated.

The second circulation unit 60b is disposed behind the second cooking chamber 101b to circulate the air inside the second cooking chamber 101b. The second circulation unit 60b also includes a second circulation fan, a second circulation motor, and a second circulation fan cover. Since the structure of the second circulation unit 60b is the same as that of the first circulation unit 60a, the description of the overlapping structure is omitted.

At least one inlet hole 13H for introducing the air outside the main body 10 into the cooking chamber 101 is provided on the rear panel 13. [

As shown in FIG. 2, the inlet hole 13H is formed close to the second cooking chamber 101b to allow the outside air to flow into the second cooking chamber 101b.

Further, a suction unit 70 may be disposed adjacent to the inlet hole 13H in the main body 10.

The suction unit 70 includes a suction motor 71, a suction fan 72 coupled to the suction motor 71, and a guide bracket 73.

The suction motor 71 to which the suction fan 72 is coupled is disposed close to the inlet hole 13H and the guide bracket 73 forms a flow path connecting the suction fan 72 and the second cooking chamber 101b .

The suction fan 72 is rotated by the operation of the suction motor 71 so that the external air flows into the inlet hole 13H and the air introduced into the inlet hole 13H flows through the guide bracket 73 into the second cooking chamber Lt; RTI ID = 0.0 > 101b. ≪ / RTI >

Thus, the temperature inside the second cooking chamber 101b can be lowered.

The guide bracket 73 is connected to the second circulation unit 60b so that external air can be introduced into the second cooking chamber 101b through the second circulation fan cover of the second circulation unit 60b .

In addition, the suction unit 70 can be connected to the first cooking chamber 101a, and the temperature inside the first cooking chamber 101a can be lowered by introducing the outside air into the first cooking chamber 101a.

A discharge pipe (not shown) and a discharge hole (not shown) may be provided on the rear panel 13 so that air corresponding to the amount of the external air introduced into the cooking chamber 101 can be discharged from the cooking chamber 101 have.

On the upper portion of the first cooking chamber 101a, there is provided an electric field chamber 10S in which various electric components (not shown) such as a circuit board are disposed.

The electric field chamber 10S may be formed as a space surrounding the upper portion, the rear portion and the lower portion of the cooking chamber 101. The control panel 30 may be coupled to the front of the electric field chamber 10S.

In addition, a cooling unit 80 for cooling the inside of the electrical equipment room 10S is disposed in the electrical equipment room 10S.

The cooling unit 80 includes a cooling motor 81 and a cooling fan 82 rotatably coupled to the cooling motor 81.

Specifically, the front flow path 80F opened to the front of the main body 10 may be provided between the electric compartment 10S and the first cooking chamber 101a, and the cooling unit 80 is provided between the electric room 10S and the front And the air in the electric component room 10S can be discharged to the front flow path 80F by being disposed between the flow paths 80F.

Accordingly, the high-temperature air inside the electrical equipment room 10S can be discharged to the outside through the front flow path 80F, and the temperature of the electrical equipment room 10S can be lowered.

At least one heat insulating member (90) is disposed between the cooking chamber (101) and the electric compartment (10S).

As shown in FIG. 2, the heat insulating member 90 may be composed of a plurality of heat insulating members 90, and a plurality of heat insulating members 90 may be disposed on the upper portion of the first cooking chamber 101a, the first and second cooking chambers 101a and 101b Rear, and below the second cooking chamber 101b, respectively.

The control panel 30, the first and second racks 40a and 40b, the heater 50, the first and second circulation units 60a and 60b, the suction unit 70, the cooling unit 80, The structure of the oven 1 having the heat insulating member 90 is similar to or the same as that of the conventional oven, and thus a detailed description thereof will be omitted.

FIG. 3A is an enlarged view of a closed state of the first and second doors 21 and 22 of the oven 1 shown in FIG.

As shown in Fig. 3A, by closing the first and second doors 21 and 22, the first and second cooking chambers 101a and 101b are closed.

The food placed on the first and second racks 40a and 40b can be heated by operating the heater 50 while the first and second cooking chambers 101a and 101b are closed.

During the operation of the oven 1, the first and second doors 21 and 22 may be fixed through a separate fixing device (not shown) so that the first and second doors 21 and 22 are not opened .

A first sealing member (not shown) is provided between the front panel 11 and the first door 21 to seal the first door 21 and the cooking chamber 101 in a state where the first door 21 is closed. The first door 21 and the second door 22 may be disposed between the second door 22 and the opening 21S in a state where the second door 22 is closed. Two sealing members (not shown) may be arranged.

FIG. 3B is a view showing a state in which the first door 21 of the oven 1 shown in FIG. 3A is opened.

The user can open the first door 21 by pulling the door handle 221 coupled to the second door 22 toward the front of the main body 10. [

The first door 21 is opened by being rotated from the upper side to the lower side with the first hinge axis 211 as the center.

The first and second cooking chambers 101a and 101b can be opened and the food can be introduced into the first and second cooking chambers 101a and 101b for cooking food, And the second cooking chamber (101a, 101b).

3B, by opening the first door 21, the first ring member 1100 (see Fig. 4) of the locking device 1000 and the first locking unit 1200 (see Fig. 4) are separated The locking device 1000 connects the first door 21 and the second door 22 so that the second door 22 is not separated from the first door 21 in the process of opening the first door 21 .

In addition, the locking device 1000 is provided with a double-opening prevention function for keeping the second door 22 fixed so that the second door 22 is not opened even if the operation lever 1400 is pressed in the state that the first door 21 is opened, Member.

3C is a view showing a state in which the second door 22 of the oven 1 shown in Fig. 3A is opened.

The user can open the second door 22 by pulling the door handle 221 forward while the operation lever 1400 is pressed.

The operation lever 1400 can be coupled to the door handle 221 through which the user can pull the door handle 221 forward while depressing the operation lever 1400. [

When the operation lever 1400 is pressed, the second door 22 is separated from the first door 21 and is rotatable about the second hinge axis 222. In this state, the door handle 221 is moved forward So that the second door 22 can be opened.

When the operation lever 1400 is pressed, the locking device 1000 engages the first door 21 with the main ring unit 1100 coupled to the main body 10, It is possible to prevent the door 21 from being opened together.

The detailed structure of the locking device 1000 and the structure in which the first and second doors 21 and 22 are opened and closed through the locking device 1000 will be described in detail below.

FIG. 4 is a perspective view of the locking device 1000 shown in FIG. 1, and FIGS. 5 and 6 are exploded perspective views of the locking device 1000 shown in FIG.

Hereinafter, with reference to Figs. 4 to 6, the structure of the locking device 1000 will be described in detail.

The locking device 1000 includes a main locking unit 1100 coupled to the main body 10, a first locking unit 1200 coupled to the first door 21 to selectively couple to the main locking unit 1100, A second locking unit 1300 coupled to the door 22 for selectively engaging the first locking unit 1200 and an operation lever 1400 for separating the second door 22 from the first door 21 by pressurization. ).

The operation lever 1400 is coupled to the door handle 221 and separates the first door 21 and the second door 22 by separating the first and second locking units 1200, Can be separated.

The main ring unit 1100 is coupled to the front panel 11.

The main ring unit 1100 includes a body 1110 coupled to the front panel 11 and a main ring 1120 coupled to the body 1110 and projecting forward.

A coupling hole 1100H may be formed between the body 1110 and the main ring 1120.

In addition, a pair of support members 1130 protruding forward from the body 1110 may be disposed on both sides of the main ring 1120.

The first locking unit 1200 includes a first holder 1210 coupled to the first door 21, a first hook member 1220 rotatably coupled to the first holder 1210, a first holder 1210, So that the first rotation shaft 1240 and the first hook member 1220 to which the first hook member 1220 is rotatably coupled rotate in the first rotation direction R1 engaged with the main ring unit 1100 And a first elastic member 1250 for applying an elastic force to the first hook member 1220.

The first elastic member 1250 may be a compression spring.

The first holder 1210 includes a first opening 1210H and a first hook member 1220 is rotatably coupled to the first opening 1210H.

The first rotating shaft 1240 is coupled to the first holder 1210 and penetrates through the first opening 1210H and is inserted horizontally into the first hook member 1220. Thereby, the first hook member 1220 is rotatable on the first opening 1210H.

The first hook member 1220 includes a first hook portion 1221 and a first hook portion 1221 formed at one end so as to be engaged with the main hook 1120 of the main hook unit 1100, And a first to-be-pushed portion 1222 formed at the other end opposite to the first to-be-pushed portion 1222. A first through hole 1220 is formed between the first hook portion 1221 and the first to- (Not shown).

A first engaging protrusion 1224 is formed on the lower side of the first hook 1221 to engage with one end of the first elastic member 1250.

A second engaging protrusion 1212 is formed on the inner side of the first holder 1210 to engage the other end of the first elastic member 1250.

The first hook member 1220 can be rotated in the first rotation direction R1 by receiving an elastic force from the first elastic member 1250 and the first hook member 1221 can be rotated in the first rotation direction R1, The first hook member 1220 and the main hook unit 1100 can be engaged by being inserted into the coupling hole 1100H of the main hook 1120 and hooked to the main hook 1120. [

The second locking unit 1300 includes a second holder 1310 coupled to the second door 22, a second hook member 1320 rotatably coupled to the second holder 1310, And a second elastic member 1340 that applies an elastic force to the second hook member 1320 such that the first hook member 1320 rotates in the first rotation direction R1.

The second elastic member 1340 may be a compression spring.

The second holder 1310 includes a second opening 1310H and the second hook member 1320 is rotatably coupled to the second opening 1310H.

The second rotation shaft 1330 is coupled to the second holder 1310 and passes through the second opening 1310H and is horizontally inserted into the second hook member 1320. [ Thereby, the second hook member 1320 is rotatable on the second opening 1310H.

The second hook member 1320 includes a hook-shaped second hook portion 1321 and a second hook portion 1321 formed at one end thereof so as to support the first to-be-urged portion 1222 of the first hook member 1220. [ And a second to-be-depressed portion 1322 formed at the other end opposite to the second hook portion 1321 and a second to-be-depressed portion 1322, A hole 1323 is formed.

In addition, a third engaging projection 1324 (see FIG. 7) to which one end of the second elastic member 1340 is coupled is formed on the lower side of the second hook portion 1321.

A fourth engaging protrusion 1312 is formed on the inner side of the second holder 1310 to engage the other end of the second elastic member 1340.

The second hook member 1320 can be rotated in the first rotation direction R1 by receiving the elastic force from the second elastic member 1340 and the first and second doors 21 and 22 are closed The first hook member 1220 can be elastically supported so that the first hook member 1220 is separated from the main hook unit 1100. [

For this, the elastic force of the second elastic member 1340 is preferably larger than the elastic force of the first elastic member 1250.

Specifically, the second hook member 1320 can be rotated in the first rotation direction R1 by receiving the elastic force from the second elastic member 1340, and the second hook portion 1321 can rotate in the first rotation direction R1 To press the first pressured portion 1222. [

The second hook portion 1321 presses the first hook member 1210 in a direction opposite to the elastic force of the first elastic member 1250 so that the first hook member 1210 rotates in the first rotation direction R1, .

The first hook member 1210 is elastically supported by the second hook member 1320 so that the first hook member 1210 rotates at a predetermined angle in a second rotation direction R2 opposite to the first rotation direction R1, Can be fixed.

In order to prevent the first hook member 1220 from rotating by more than a predetermined angle in the second rotation direction R2 opposite to the first rotation direction R1 as being pressed by the second hook portion 1321, And may further include a separate stopper (not shown) interfering with the first holder 1210.

Here, the second hook member 1320 elastically supports the first hook member 1220, the first hook member 1220 to be rotated by the first elastic member 1250 in the first rotation direction R1 Means that the second hook member 1320 supports the first hook member 1220 through the elastic force of the second elastic member 1340 so that the first hook member 1320 does not rotate in the first rotation direction R1 but maintains its position do.

The second hook member 1320 elastically supporting the first hook member 1220 by the second elastic member 1340 in the first rotation direction R1 is also rotated in the first rotation direction R1 by a predetermined angle (Not shown) interfering with the second holder 1310 so as not to rotate the second holder 1310 more than the second holder 1310. [

In addition, the above-described double-opening preventing members 1230 and 1260 are configured such that the rotation ring member 1230 rotatably coupled to the first holder 1210 and the rotation ring member 1230 engaged with the second hook member 1320 And a third elastic member 1260 for applying an elastic force to the rotation ring member 1230 so as to rotate in the first rotation direction R1.

The third elastic member 1260 may be a compression spring.

The double opening prevention members 1230 and 1260 maintain the state where the second door 22 is fixed to the first door 21 when the operation lever 1400 is pressed in the state that the first door 21 is opened , It is possible to prevent the second door 22 from being opened when the first door 21 is opened.

The rotation ring member 1230 is coupled to the first rotation shaft 1240, so that it can rotate coaxially with the first hook member 1220.

The rotation ring member 1230 includes a rotation ring portion 1231 formed at one end portion adjacent to the second hook portion 1321 and a pair of support protrusions 1232 formed at the other end portion opposite to the rotation ring portion 1231 do.

The pair of support protrusions 1232 protrude from both ends of the rotation ring portion 1231 and are inserted between the pair of support protrusions 1232 and the rotation ring portion 1231, A third through hole 1233 is formed.

A first hook member 1220 may be disposed between the pair of support protrusions 1232.

In addition, the swivel ring member 1230 includes a fifth engaging projection 1234 formed on at least one of the pair of support protrusions 1232.

The fifth engagement protrusion 1234 may protrude from the lower end of the support protrusion 1232.

One end of the third elastic member 1260 is coupled to the fifth engaging projection 1234. [

A sixth engaging projection 1213 is formed on the inner side of the first holder 1210 to engage the other end of the third elastic member 1260.

The rotation hook member 1230 can be rotated in the first rotation direction R1 by receiving elastic force from the third elastic member 1260 so that the rotation hook member 1231 can be rotated by the second hook member 1321, The rotation ring member 1230 and the second hook member 1320 can be engaged.

The pair of support protrusions 1232 of the rotation ring member 1230 is rotated in the main ring unit 1230 so that the rotation ring member 1230 does not rotate in the first rotation direction R1 1100). ≪ / RTI >

The rotation hook member 1230 is resiliently supported by the second hook member 1320 when the first door 21 is opened to release support from the pair of support members 1130. [

The second hook member 1320 elastically supports the rotation ring member 1230 so that the rotation ring member 1230 to be rotated by the third elastic member 1260 in the first rotation direction R1 Means that the second hook member 1320 supports the rotation ring member 1230 through the elastic force of the second elastic member 1340 so as to maintain its position without rotating in the first rotation direction R1.

For this, the elastic force of the second elastic member 1340 is preferably larger than the elastic force of the third elastic member 1260.

The elastic force of the second elastic member 1340 is applied to the first elastic member 1250 so that the second hook member 1320 can elastically support the first hook member 1220 and the rotation ring member 1230 together. May be set to be larger than the sum of the elastic force and the elastic force of the third elastic member (1260).

The operation lever 1400 is coupled to the door handle 221 and is operable by pressure to separate the second door 22 from the first door 21.

The second hook member 1320 can be rotated in the second rotation direction R2 in which the second hook member 1320 is separated from the rotation ring member 1230 by being pressed by the operation lever 1400. [

The operation lever 1400 includes a lever body 1410, a lever case 1420 to which the lever body 1410 is rotatably engaged, a lever shaft 1430 to be inserted into the lever body 1410, and a lever body 1410, And a lever elastic member 1440 for applying an elastic force.

The lever body 1410 includes a grip portion 1411 that can be gripped by the user and a pressing portion 1412 coupled to one end of the grip portion 1411. [

The pressing portion 1412 protrudes toward the second hook member 1320 and contacts the second pressable portion 1322 of the second hook member 1320. [

A lever shaft hole 1413 through which the lever shaft 1430 is inserted is formed between the grip portion 1411 and the pressing portion 1412.

The lever shaft hole 1413 penetrates the lever body 1410 in a vertical direction through which the lever body 1410 can rotate in the horizontal direction with respect to the lever shaft 1430.

Thus, when the gripper 1411 is pressed, the lever body 1410 rotates around the lever shaft 1430 so that the pressing portion 1412 presses the second to-be-pressed portion 1322. [

The lever case 1420 includes a first case 1421 and a second case 1422.

The first case 1421 has a penetration portion 1421H through which the pressing portion 1412 penetrates and the lever shaft 1430 is coupled to the second case 1422. [

The lever elastic member 1440 applies an elastic force to the lever body 1410 so that the lever body 1410 rotates in a direction opposite to the direction in which the second pressured portion 1322 is pressed.

The lever elastic member 1440 may be a torsion spring.

The user can press the grip portion 1411 with a force larger than the elastic force of the lever elastic member 1440 to rotate the lever body 1410 so that the pressing portion 1412 presses the second hook member 1320 have.

The second pressured portion 1322 pressed by the press portion 1412 includes a sliding surface 1322S in contact with the press portion 1412. [

When the lever body 1410 rotates as the grip portion 1411 is pressed, the sliding surface 1322S is pressed by the pressing portion 1412 so that the second hook member 1320 rotates in the second rotation direction R2 .

When the grip portion 1411 of the operation lever 1400 is pressed while the first and second doors 21 and 22 are closed, the second hook member 1320 rotates in the second rotation direction R2, Can be separated from member (1330).

However, the structure in which the second hook member 1320 is rotated in the second rotation direction R2 through the operation of the operation lever 1400 can be changed into various structures in addition to the above-described structure.

As shown in Fig. 1, the operation lever 1400 can be coupled to the door handle 221.

The user can open the second door 22 by pulling the door handle 221 in a state in which the gripper 1411 is pressed.

The operation lever 1400 may be coupled to one side of the door handle 221 facing the front surface of the second door 22 so as to face the front surface of the second door 22.

Accordingly, the user can press the grip portion 1411 of the operation lever 1400 and pull in the direction of opening the first and second doors 21 and 22 through the door handle 221. [

The operation lever 1400 is not coupled to the door handle 221 but may be disposed on the control panel 30 or the like. In this case, when the user depresses the grip portion 1411 of the operation lever 1400, The second door 22 can be opened by pulling the handle 221.

7 is a view showing the locking device 1000 in a state in which the first and second doors 21 and 22 are closed.

7, in a state in which the first and second doors 21 and 22 are closed, the rotation ring member 1230 is configured such that a pair of support protrusions 1232 protrude from the pair of main ring units 1100 And the position is maintained.

The second hook member 1320 presses the first pressable portion 1222 through the second hook portion 1231 so that the first hook member 1220 is not engaged with the main hook 1120, (1220).

In addition, the second hook member 1320 remains engaged with the rotation annulus 1231 of the rotation ring member 1230.

Therefore, when the first door 21 and the second door 22 are closed, the first door 21 and the second door 22 are engaged to prevent the second door 22 from rotating, 21 are rotatable from the main body 10.

8A is a view showing the locking device 1000 with the first door 21 opened.

The first hook member 1220 is not engaged with the main hook unit 1100 and the second hook member 1320 and the rotation hook 1320 are engaged with each other, Member 1230 is engaged.

Accordingly, when the user pulls the door handle 221, the first door 21 is opened by rotating about the first hinge shaft 211 in a state where the second door 22 is closed.

When the first door 21 is opened, the pair of support protrusions 1232 of the rotation ring member 1230 are released from the pair of support members 1130 of the main ring unit 1100. Thus, the swing ring member 1230 is resiliently supported by the second hook member 1320 in a state of being engaged with the second hook member 1320.

8B is a view showing the operation of the locking device 1000 when the operation lever 1400 is pressed in a state in which the first door 21 is opened.

8B, when the grip portion 1411 is pressed in the state that the first door 21 is opened, the lever body 1410 rotates so that the pressing portion 1412 is rotated by the rotation of the second hook member 1320 2 pressurized portion 1322 is pressed.

The sliding surface 1322S of the second to-be-urged portion 1322 is pressed by the urging portion 1412 so that the second hook member 1320 rotates in the second rotational direction R2.

As described above, since the rotary hook member 130 is elastically supported by the second hook member 1320 in a state of being engaged with the second hook member 1320 in the state in which the first door 21 is opened, When the member 1320 rotates in the second rotation direction R2, the rotation ring member 1230 is rotated by the third elastic member 1260 in the first rotation direction R1 ).

Thus, the swing ring member 1230 and the second hook member 1320 can be maintained in a coupled state.

Therefore, even if the operation lever 1400 is pressed in the state in which the first door 21 is opened, it is possible to prevent the second door 22 from being opened. As a result, the first and second doors 21, It can be prevented from being opened.

9A and 9B are views showing the operation of the locking device 1000 in the process of opening the second door 22.

9A, when the grip portion 1411 of the operation lever 1400 is pressed in a state where the first and second doors 21 and 22 are closed, the lever body 1410 rotates to rotate the pressing portion 1412 Pushes the second to-be-urged portion 1322 of the second hook member 1320.

The sliding surface 1322S of the second to-be-urged portion 1322 is pressed by the urging portion 1412 so that the second hook member 1320 rotates in the second rotational direction R2.

In the state where the first door 21 is closed, the rotation ring member 1230 is held in position by the pair of support protrusions 1232 being supported by the pair of support members 1130 of the main ring unit 1100.

Therefore, the second hook member 1320 can be separated from the rotation ring member 1230 by rotating in the second rotation direction R2.

As the second hook member 1320 rotates in the second rotation direction R2, the first hook member 1220 elastically supported by the second hook member 1320 is engaged with the first elastic member 1250 Thereby rotating in the first rotational direction R1.

Thus, the first hook member 1220 engages with the main hook unit 1100 by being hooked on the main hook 1120 of the main hook unit 1100.

9B, when the door handle 221 is pulled in a state in which the grip portion 1411 is pressed, the second door 22 is separated from the first door 21, 222, respectively.

The first door 21 is fixed to the main body 10 by the first hook member 1220 being coupled to the main ring unit 1100 so that the first door 21 can be opened and closed in the process of opening the second door 22, Can be prevented from being opened.

In addition, the operation lever 1400 can selectively disengage the second hook member 1320 from the rotary hook member 1230 according to the degree to which the grip portion 1411 is pressed.

For example, when the grip portion 1411 is pressed by 0 to 2.5 mm on the basis of the distance that the tip of the grip portion 1411 moves toward the lever case 1420 by the pressure, the second hook member 1320 Even if it rotates in the second rotational direction R2, it can be set to remain coupled with the rotation ring member 1330. [ When the door handle 221 is pulled in this state, the first door 21 is opened.

The second hook member 1320 and the rotating hook member 1230 are maintained in the engaged state and the first hook member 1220 is engaged with the main hook unit 1220. In the case where the grip portion 1411 is pressed by 2.5 mm to 4.0 mm, 1100), the first and second doors 21, 22 can be kept closed. In this state, the first door 21 is fixed to the main body 10, and the second door 22 is fixed to the first door 22, so that even if the door handle 221 is pulled, the first and second doors 21, 22) are not opened.

The second hook member 1320 can be detached from the rotary hook member 1230 so that the second door 22 can be opened when the grip portion 1411 is pressed by 4.0 mm to 8.0 mm.

10 is a perspective view of a locking device 2000 according to another embodiment of the present disclosure.

A locking device 2000 according to another embodiment of the present disclosure includes a main ring unit 2100 coupled to a main body 10 (see Fig. 3B), a main ring unit 2100 coupled to a first door 21 A second locking unit 2300 coupled to the second door 22 (see FIG. 3C) to selectively engage the first locking unit 2200, and a second locking unit 2300 selectively coupled to the second door 22 And an operation lever 2400 for separating the second door 22 from the first door 21.

The main locking unit 2100, the first locking unit 2200, the second locking unit and the operating lever 2400 of the locking device 2000 are sequentially arranged from the main body 10 toward the front of the main body 10 do.

The operation lever 2400 is coupled to the door handle 221 (see FIG. 3C), and by separating the first lock unit 2200 and the second lock unit 2300 by pressurization, the first door 21 and the second The door 22 can be separated.

In addition, the locking device 2000 is provided with a double opening prevention member 223 for holding the second door 22 so as to prevent the second door 22 from being opened even if the operation lever 2400 is pressed in the state that the first door 21 is opened, .

The locking device 2000 according to another embodiment of the present disclosure includes a main ring unit 2100 coupled to the main body 10, a first locking unit 2200 coupled to the first door 21, a second door 22, A locking device 1000 according to one embodiment of the present disclosure described with reference to FIGS. 3A through 9B in that it is composed of a second locking unit 2300 coupled to the door handle 221 and an operating lever 2400 coupled to the door handle 221. [ ) And the basic configuration is similar. The detailed configuration of the main loop unit 2100, the first lock unit 2200, the second lock unit 2300 and the operation lever 2400 of the lock apparatus 2000 is the same as that of the lock apparatus 2000 according to the embodiment of the present disclosure, (1000).

11 is a cross-sectional view of the locking device 2000 shown in Fig. 10, and Figs. 12 and 13 are exploded perspective views of the locking device 2000 shown in Fig.

Hereinafter, with reference to Figs. 10 to 13, the detailed structure of the locking device 2000 according to another embodiment of the present disclosure will be described, and a structure that overlaps with the locking device 1000 according to one embodiment of the present disclosure .

The main ring unit 2100 is coupled to the front panel 11 of the main body 10.

The main ring unit 2100 includes a body 2110 coupled to the front panel 11, a first ring member 2120 rotatably coupled to the body 2110, a first ring member 2120 coupled to the body 2110, 2120 are rotatably engaged and a first rotation member 2120 is rotated in a first rotation direction R1 in which the first rotation member 2120 is engaged with the first engagement protrusion 22111 of the first lock unit 2200, And a first elastic member (T1) for applying an elastic force to the main ring (2120).

Specifically, the body 2110 includes a receiving portion 2110S formed inside.

The first rotating shaft 2130 is coupled to the body 2110 through the receiving portion 2110S of the body 2110 in the horizontal direction (X axis direction), and is connected to the first ring member 2120 in the horizontal direction ). Thus, the first ring member 2120 can rotate in the up-and-down direction (Z-axis direction) from the inside of the receiving portion 2110S of the body 2120.

The first ring member 2120 includes a ring-shaped first ring portion 2121 formed at one end thereof so as to be engaged with the first locking projection 22111 of the first lock unit 2200, And the other end 2122 opposite to the first end 2121 is coupled to one end of the first elastic member T1.

The first hook 2121 protrudes from the receiving portion 2110S toward the first latching protrusion 22111 so that the first hooking protrusion 2121 can selectively engage with the first latching protrusion 22111. [

The first ring member 2120 includes a through hole 2123 formed between the first ring member 2121 and the other end 2122 of the first ring member 2120 and includes a first ring member 2120, The first rotating shaft 2130 is inserted into the through hole 2123 of the first rotating shaft 2130. [

The other end of the first elastic member T1 is coupled to the body 2110 on the receiving portion 2110S of the body 2110. [ The first ring member 2120 receives an elastic force from the first elastic member T1 so as to rotate in a first rotation direction R1 in which the first ring member 2120 is engaged with the first locking projection 22111. [

The first elastic member T1 may be a compression spring.

The first ring member 2120 may be a separate stopper interfering with the body 2110 to prevent the rotation of the first ring member 2120 by a predetermined angle in the first rotation direction R1 due to the elastic force of the first elastic member T1 Not shown). In this way, the first ring member 2120 can be easily coupled to the first latching protrusion 22111.

The first locking unit 2200 includes a first holder 2210 coupled to the first door 21 and a double unlocking member 2220, 2230, 2240 disposed within the first holder 2210.

Specifically, the first holder 2210 includes a first cover 2211 and a second cover 2212 coupled to the first cover 2211.

The first cover 2211 includes a first engagement hole 22111H and a second engagement hole 22112H penetrating the first cover 2211. The first cover 2211 includes first and second engagement holes 22111H and 22112H protruding from the first and second engagement holes 22111H and 22112H, And includes latching protrusions 22111 and 22112.

The second cover 2212 includes first and second connection holes 22121a and 22121b penetrating the inside of the second cover 2212 so as to be connected to the first and second coupling holes 22111H and 22112H of the first cover 2211, , 22121b.

As shown in Figs. 12 and 13, the first engagement hole 22111H may be disposed on the upper side of the second engagement hole 22112H.

The first ring member 2120 can be engaged with the first locking protrusion 22111 by inserting the first ring portion 2121 into the first coupling hole 22111H.

Specifically, the first locking protrusion 22111 is inserted into the first annular hole 2121H of the first annular portion 2121, so that the main annular unit 2100 and the first locking unit 2200 can be engaged.

The first ring portion 2121 is pressed against the first locking protrusion 22111 in the process of moving the first ring portion 2121 toward the first locking protrusion 22111 to engage with the first locking protrusion 22111, The first hooking protrusion 22111 is inserted into the first annular hole 2121H and the first hooking protrusion 22111 is inserted into the first annular portion 2121 The first ring portion 2121 rotates in the first rotation direction R1 by the elastic force of the first elastic member T1. Thus, the first hook 2121 can engage with the first hooking protrusion 22111.

The process of separating the first ring 2121 from the first locking protrusion 22111 is the reverse of the process in which the first ring 2121 is coupled to the first locking protrusion 22111.

A second engagement hole 22112H is disposed below the first engagement hole 22111H and a second engagement protrusion 22112 is disposed on the second engagement hole 22112H.

The second locking protrusion 22112 is similar in structure to the first locking protrusion 22111 and the second ring member 2330 of the second locking unit 2300 described later is inserted into the second fitting hole 22112H And can engage with the second loop member 2330.

The structure in which the second loop member 2330 is engaged with the second latching projection 22112 will be described later.

Inside the first holder 2210, the double-opening preventing members 2220, 2230, and 2240 are disposed. The double opening prevention members 2220, 2230 and 2240 include a first sliding member 2220, a first stopper 2230 and a second stopper 2240.

The first sliding member 2220 is disposed slidably in the horizontal direction (X-axis direction) from the inside of the first holder 2210.

In addition, a second elastic member (T2) is coupled to one side of the first sliding member (2220).

The second elastic member T2 applies an elastic force to the first sliding member 2220 so that the first sliding member 2220 moves in the first horizontal direction X1. The second elastic member T2 may be a compression spring.

The first sliding member 2220 includes a seating portion 2221 disposed on the lower side of the first coupling hole 22111H and extending in the horizontal direction (X axis direction), an upper portion 2221 projecting upward from one end of the seating portion 2221 A first latching portion 2223 protruded upward from the upper surface of the first latching portion 2222 and a third latching portion 2224 protruded downward from the other end of the latching portion 2221 do.

The second elastic member T2 is coupled to one side of the third latching portion 2224 to apply an elastic force to move the second sliding member 2230 in the first horizontal direction X1. The first horizontal direction X1 is defined as a direction toward one end of the seating portion 2221 where the first latching portion 2222 is disposed from the other end of the seating portion 2221 where the third latching portion 2224 is disposed .

The first sliding member 2220 can slide in the first horizontal direction X1 by the second elastic member T2 or slide in the second horizontal direction X2 opposite to the first horizontal direction X1 .

Hereinafter, for convenience of explanation, the first sliding member 2220 is defined as the first position in which the first sliding member 2220 moves in the first horizontal direction X1, and the first sliding member 2220 is moved in the second horizontal direction X2 ) Is defined as the second position.

The first ring member 2121 of the first ring member 2120 which rotates in the second rotation direction R2 can be seated in the seating portion 2221 according to the reciprocating movement of the first sliding member 2220. [

Specifically, when the first sliding member 2220 is disposed at the first position by the elastic force of the second elastic member T2, the first ring member 2120 can rotate in the second rotational direction R2 The first ring part 2121 can be seated on the seat part 2221. At this time, the first hook 2121 and the first hooking protrusion 22111H are separated.

When the first sliding member 2220 moves in the second horizontal direction X2 and is disposed at the second position in a state where the first ring member 2120 and the first locking protrusion 22111 are engaged, And the portion 2222 is disposed on the lower side of the first ring portion 2121.

The first hooking portion 2222 can interfere with the first loop member 2120 rotating in the second rotation direction R2 and the first loop member 2120 can be rotated in the second rotation direction R2 It can block rotation.

A first stopper 2230 is disposed above the first latching portion 2222.

A third elastic member T3 is coupled to an upper end of the first stopper 2230. [

The third elastic member T3 applies an elastic force to the third elastic member T3 so that the first stopper 2230 moves downward. The third elastic member T3 may be a compression spring.

The first stopper 2230 may be moved downward by the elastic force of the third elastic member T3 so as to protrude onto the first engagement hole 2211H.

The first stopper 2230 may be disposed inside the first holder 2210 without being protruded onto the first engagement hole 22111H by being supported by the first ring member 2120. [

The first stopper 2230 is provided with an inclined surface 2231 which is pressed from the first ring member 2120 so as to move upward when the first ring member 2120 is coupled to the first engaging projection 22111 .

As the first ring member 2120 is separated from the first latching protrusion 22111, the first stopper 2230 is released from the first ring member 2120. Therefore, the first stopper 2230 moves downward due to the elastic force of the third elastic member T3, and protrudes onto the first engagement hole 2211H.

The first stopper 2230 is protruded onto the first engaging hole 22111H so that the first stopper 2230 is seated on the first engaging portion 2222. [

Thus, the second latching portion 2223 interferes with the first stopper 2230, so that the first sliding member 2220 can be prevented from moving in the second horizontal direction X2.

The inclined surface 2231 of the first stopper 2230 is pressed by the first ring portion 2121 so that the first stopper 2230 is inserted into the first engagement hole 22111H, Can be easily moved upward.

The second stopper 2240 is disposed on the lower side of the seat portion 2221.

Specifically, the second stopper 2240 may be disposed on the lower side of one end of the seat portion 2221 to which the first latch portion 2222 is coupled, and may face the third latch portion 2224.

The fourth elastic member T4 is coupled to one side of the second stopper 2240 to apply an elastic force to move the second stopper 2240 in the second horizontal direction X2. The fourth elastic member T4 may be a compression spring.

The second stopper 2240 protrudes on the second engaging hole 22112H in a state where the second annular member 2330 is engaged with the second retaining protrusion 22112 and is disposed on the lower side of the second annular member 2330 And may interfere with the second loop member 2330 rotating in the first rotation direction R1. The second stopper 2240 can prevent the second ring member 2230 from rotating in the first rotation direction R1 in which the second ring member 2230 is separated from the second locking protrusion 22112. [

It is possible to prevent the second door 22 from being opened when the first door 21 is opened through the first sliding member 2220, the first stopper 2230, and the second stopper 2240. The double opening prevention structure of the second door 22 through the first sliding member 2220, the first stopper 2230 and the second stopper 2240 will be described later.

The second locking unit 2300 includes a second holder 2310 coupled to the second door 22, a second sliding member 2320 slidably coupled to the inside of the second holder 2310, A fifth elastic member T5 for applying an elastic force to the second sliding member 2320 such that the second sliding member 2320 moves in the first horizontal direction X1, 2 ring member 2330 and a second rotation shaft 2340 coupled to the second sliding member 2320 and to which the second ring member 2330 is rotatably coupled and the second ring member 2330 are engaged with the second locking projections And a sixth elastic member T6 for applying an elastic force to the second ring member 2330 so as to rotate in a second rotational direction R2 that engages with the second ring member 2330. [

The second sliding member 2320 is inserted into the receiving portion 2310S of the second holder 2310 so that the first and second sliding members 2310 and 2310 are inserted into the receiving portion 2310S of the second holder 2310, It is possible to reciprocate in the second horizontal direction (X1, X2).

In addition, the second holder 2310 includes an opening 2310H formed in the inner side so that the second ring 2331 of the second ring member 2330, which will be described later, can pass through.

The second sliding member 2320 is slidably coupled to the receiving portion 2310S of the second holder 2310 and is disposed on the receiving portion 2310S of the second holder 2310 in the first and second horizontal directions X1, X2). ≪ / RTI >

The fifth elastic member T5 has one end connected to one side of the second sliding member 2320 and the fifth elastic member T5 so that the second sliding member 2320 moves in the first horizontal direction X1, And the other end opposite to the one end of the second holder 2310 is coupled to the inside of the second holder 2310. The fifth elastic member T5 may be a compression spring.

On the inside of the second sliding member 2320, the second ring member 2330 is rotatably disposed in the first and second rotational directions R1 and R2.

The second loop member 2330 can rotate in the first and second rotational directions R1 and R2 as the first loop member 2120. [

However, the first and second rotational directions R1 and R2, in which the second ring member 2330 rotates, may be referred to as third and fourth rotational directions, respectively.

Specifically, the second ring member 2330 includes a second rotation shaft 2340 disposed in the horizontal direction (X-axis direction) so as to penetrate the first receiving portion 2320S1 (see FIG. 15A) of the second sliding member 2320 And can be rotated in the vertical direction (Z-axis direction) from the inside of the first accommodating portion 2320S1.

The second ring member 2330 includes a ring-shaped second ring portion 2331 formed at one end to be engaged with the second locking projection 22112 of the first lock unit 2200, And the other end 2332 opposite to the second elastic member 2331 is coupled to one end of the sixth elastic member T6.

The second hook 2331 protrudes toward the second hook protrusion 22112 so that the second hook 2331 can be selectively engaged with the second hook protrusion 22112. [

To this end, the second sliding member 2320 includes an opening 2320H formed on the inner side so that the second annular portion 2331 can pass through.

The second annular portion 2331 of the second annular member 2330 sequentially passes through the opening 2320H of the second sliding member 2320 and the opening 2310H of the second holder 2310, And can engage with the latching protrusion 22112.

When the second hook 2331 of the second hook member 2330 is inserted into the second hooking hole 22112H, one side of the second hook 2331 is disposed close to the third hook 2224 do.

The width of the opening 2320H of the second sliding member 2320 and the width of the opening 2310H of the second holder 2310 may correspond to the width of the second ring 2331 and the width of the second sliding member 2320 The height of the opening 2320H of the second holder 2310 and the opening 2310H of the second holder 2310 preferably correspond to the turning radius of the second ring member 2330 in the first and second rotating directions R1 and R2.

The second annular member 2330 includes a through hole 2333 formed between the second annular portion 2331 and the other end 2332 of the second annular member 2330 and the second annular member 2330, The second rotation shaft 2140 is inserted into the through hole 2333 of the second shaft 2133. [

The other end of the sixth elastic member T6 is coupled to the second sliding member 2320 on the first receiving portion 2320S1 of the second sliding member 2320. [ Thereby, the second ring member 2300 is subjected to the elastic force from the sixth elastic member T6 so as to rotate in the second rotation direction R2 in which the second ring member 2300 engages with the second locking projection 22112. [ The sixth elastic member T6 may be a compression spring.

The second ring member 2330 may be fixed to the second sliding member 2320 or the second holder 2330 to prevent the second ring member 2330 from rotating in the second rotation direction R2 by a predetermined angle or more, And a separate stopper (not shown) that interferes with the antenna 2310. In this way, the first ring member 2120 can be easily coupled to the first latching protrusion 22111.

The second ring member 2330 interferes with the opening 2320H of the second sliding member 2320 or the opening 2310H of the second holder 2310 so that the turning radius thereof can be regulated.

The second ring member 2330 is inserted into the second engaging hole 22112H so that the second engaging protrusion 22112 is inserted into the second annular hole 2331H of the second annular portion 2331 So that the second lock unit 2300 and the first lock unit 2200 can be coupled to each other.

The second hook 2331 is pressed against the second hook protrusion 22112 in the process of moving the second hook 2331 toward the second hook protrusion 22112 in order to engage with the second hook protrusion 22112, And rotates in the first rotational direction R1. The second hook 238 is inserted into the second hook hole 2331H so that the second hook 2331 is pressed against the second hook 2331 so that the second hook 2331 of the sixth elastic member T6 And is rotated in the second rotation direction R2 by the elastic force. Thus, the second hook 2331 can engage with the second hooking protrusion 22112.

The process of separating the second hook 2331 from the second hook protrusion 22112 is a reverse order of the process in which the second hook 2331 is coupled to the second hook protrusion 22112.

As described above, in a state in which the second door 22 is closed, the second stopper 2240 is disposed below the second claw 2331.

The second ring 2331 is rotated in the first rotation direction R1 in which it is separated from the second interference protrusion 22112 by interfering with the second stopper 2240 while the second door 22 is closed Can be blocked.

The operation lever 2400 is coupled to the door handle 221 and is operable by pressure to separate the second door 22 from the first door 21.

The second sliding member 2320 can be moved in the second horizontal direction X2 by being pressed by the operation lever 2400. [

As the second sliding member 2320 moves in the second horizontal direction X2, the second loop member 2330 coupled to the second sliding member 2320 also moves in the second horizontal direction X2.

More specifically, the operation lever 2400 includes a lever body 2410, a lever case 2420 to which the lever body 2410 is rotatably engaged, a lever shaft 2430 to be inserted into the lever body 2410, And a lever elastic member 2440 for applying an elastic force to the lever 2440.

The lever body 2410 includes a grip portion 2411 that can be gripped by the user and a pressing portion 2412 coupled to one end of the grip portion 2411. [

The pressing portion 2412 protrudes toward the second sliding member 2320 and is inserted into the second receiving portion 2320S2 (see FIG. 15B) of the second sliding member 2320 so that the second sliding member 2320 is inserted into the second The inside of the second accommodating portion 2320S2 can be pressed so as to move in the horizontal direction X2.

A lever shaft hole 2413 through which the lever shaft 2430 is inserted is formed between the grip portion 2411 and the pressing portion 2412.

The lever shaft hole 2413 passes through the lever body 2410 in a vertical direction through which the lever body 2410 can rotate in the horizontal direction with respect to the lever shaft 2430.

The lever body 2410 rotates about the lever axis 2430 so that the pressing portion 2412 presses the second sliding member 2320. As a result,

The lever case 2420 includes a first case 2421 and a second case 2422. [

The first case 2421 has a penetration portion 2421H through which the pressing portion 2412 penetrates and the lever shaft 2430 is coupled to the second case 2422. [

The lever elastic member 2440 applies an elastic force to the lever body 2410 so that the lever body 2410 rotates in a direction opposite to the direction in which the lever body 2410 presses the second sliding member 2320. The lever elastic member 2440 may be a torsion spring.

The user can press the grip portion 2411 with a force greater than the elastic force of the lever elastic member 2440 to rotate the lever body 2410 so that the pressing portion 2412 presses the second sliding member 2320 have.

In addition, the user can move the second sliding member 2320 in the second horizontal direction X2 by pressing the gripper 2411. [

When the lever body 2410 is rotated by the pressing of the grip portion 2411, the inner wall of the second accommodating portion 2320S2 of the second sliding member 2320 into which the pressing portion 2412 is inserted is pressed against the pressing portion 2412 The second sliding member 2320 slides in the second horizontal direction X2.

When the grip portion 2411 of the operation lever 2400 is pressed in the state that the first and second doors 21 and 22 are closed, the second sliding member 2320 and the second sliding member 2320, The ring member 2330 moves in the second horizontal direction X2.

As the second ring member 2330 moves in the second horizontal direction X2, the second ring portion 2331 can press the third latching portion 2224 in the second horizontal direction X2, The first sliding member 2220 can move in the second horizontal direction X2.

As the third latching portion 2224 moves in the second horizontal direction X2, the second ring portion 2331 of the second loop member 2330 can be released from the interference by the second stopper 2240 .

A space is formed between the third latching portion 2224 and the second stopper 2240 to allow the second ring portion 2331 to rotate in the first rotation direction R1, The second interference projection 2330 can be rotated in the first rotation direction R1 separated from the second interference projection 22112. [

The operation lever 2400 can be coupled to the door handle 221 as described above.

The user can open the second door 22 by pulling the door handle 221 in a state in which the gripper 2411 is pressed.

The operation lever 2400 may be coupled to one side of the door handle 221 facing the front surface of the second door 22 so as to face the front surface of the second door 22.

Therefore, the user can press the grip portion 2411 of the operation lever 2400 and pull the door 2121 in the opening direction of the first and second doors 21 and 22. [

The operation lever 2400 may be disposed on the control panel 30 without being coupled to the door handle 221. In this case, the user may press the grip 2411 of the operation lever 2400 The second door 22 can be opened by pulling the door handle 221.

The process of opening the first and second doors 21 and 22 will be described in more detail below.

14A to 14C are diagrams showing the operation of the locking device 2000 in the process of opening the first door 21.

14A to 14C, a description will be given of a structure in which the first door 21 is opened and a double opening prevention structure in which the second door 22 is not opened in a state where the first door 21 is opened .

14A is a view showing a locking device 2000 in a state where the first and second doors 21 and 22 are closed.

As described above, in a state in which the first and second doors 21 and 22 are closed, the first ring member 2120 is inserted into the first engagement hole 22111H and engaged with the first engagement protrusion 22111. [

The second hook member 2330 is inserted into the second coupling hole 22112H and engaged with the second hook protrusion 22112 and is interfered by the second stopper 2240 so that the second hook protrusion 22112 The rotation in the separated first rotational direction R1 can be blocked. Thus, the second door 22 can be maintained in a state of being engaged with the first door 21.

14B is a view showing a state of the locking device 2000 in a state where the first door 21 starts to be opened and FIG. 14C is a view showing a state of the locking device 2000 in a state where the first door 21 is opened Fig.

The door handle 221 coupled to the second door 22 starts to be pulled toward the front of the main body 10 so that the first door 21 to which the second door 22 is coupled starts to be opened.

As shown in FIG. 14B, when the first door 21 starts to be opened, the first ring member 2120 rotates in the second rotation direction R2 by being pressed by the first locking protrusion 22111.

The first annular member 2120 of the first annular member 2120 and the first engagement protrusion 22111 are separated by rotating the first annular member 2120 in the second rotation direction R2.

14C, the door handle 221 is further pulled toward the front of the main body 10, so that the first ring member 2120 and the first latching protrusion 22111 are separated from each other, The member 2120 rotates in the first rotation direction R1 by the elastic force of the first elastic member T1.

Accordingly, the main ring unit 2100 and the first locking unit 2200 are separated from each other, whereby the first door 21 is opened.

14C, when the first ring member 2120 is separated from the first latching protrusion 22111 by the opening of the first door 21, the first stopper 2230 is inserted into the first ring member 2120, The support by the guide portion 2121 is released.

Therefore, the first stopper 2230 is moved downward by the elastic force of the third elastic member T3, so that the first stopper 2230 protrudes onto the first engagement hole 2211H.

As the first stopper 2230 is projected onto the first engagement hole 22111H, the first stopper 2330 is seated on the first engagement portion 2222. [

As a result, the second latching portion 2223 interferes with the first stopper 2230, thereby preventing the first sliding member 2220 from moving in the second horizontal direction X2.

The movement of the first sliding member 2220 in the second horizontal direction X2 is blocked by the first stopper 2230 so that the movement of the second annular member 2330 facing the third stopping portion 2224 The movement in the second horizontal direction X2 is also blocked and the movement of the second sliding member 2320 in which the second ring member 2330 is coupled is also blocked in the second horizontal direction X2.

Therefore, even if the gripping portion 2411 is pressed, the lever body 2410 does not rotate and its position is maintained.

This makes it possible to prevent the second door 22 from being opened even if the operation lever 2400 is pressed in the state that the first door 21 is opened and when the first door 21 is opened, (22) can be prevented from being double opened.

15A to 15E are views showing the operation of the locking device 2000 when the second door 22 is opened.

Fig. 15A is a view showing a locking device 2000 in a state in which the first and second doors 21 and 22 are closed, and shows a locking device 2000 as viewed from a direction different from that shown in Fig. 14A.

Figs. 15B and 15C show a state in which the grip portion 2411 of the operation lever 2400 is viewed from a different direction from the lock device 2000 in a pressed state.

15A to 15C, when the grip portion 2411 of the operation lever 2400 is pressed in the state where the first and second doors 21 and 22 are closed, the lever body 2410 rotates, The pressing portion 2412 inserted into the second accommodating portion 2320S2 presses the second sliding member 2320 in the second horizontal direction X2.

The second loop member 2330 coupled to the first receiving portion 2320S1 of the second sliding member 2320 also moves in the second horizontal direction X2 by sliding the second sliding member 2320 in the second horizontal direction X2, X2).

As the second ring member 2330 moves in the second horizontal direction X2, the third latching portion 2224 of the first sliding member 2220 is pressed by the second ring portion 2331, Thereby, the first sliding member 2220 also moves in the second horizontal direction X2.

15C, when the first sliding member 2220 is moved to the second position by moving in the second horizontal direction X2, the second loop member 2330 is interfered from the second stopper 2240 It is possible to rotate in the first rotation direction R1 in which it is separated from the second locking projection 22112. [

As the first sliding member 2220 moves in the second horizontal direction X2, the first latching portion 2222 is disposed on the lower side of the first ring portion 2121, and the second latching portion 2223, Is disposed on the lower side of the first stopper 2230.

The first ring member 2120 is interfered with the first engaging portion 2222 disposed below the first ring portion 2121 so that the first ring member 2120 is moved in the second direction R2 separated from the first engaging protrusion 22111 .

When the grip portion 2411 is pressed in a state where the first and second doors 21 and 22 are closed, the first ring member 2120 is locked by the first locking portion 2222 to the first locking protrusion 22111 ) Can be maintained.

In addition, the first stopper 2230 is interfered with the second latching portion 2223, so that the downward movement of the third elastic member T3 can be blocked.

15D, when the door handle 221 starts to be pulled in a state in which the grip portion 2411 is pressed, the second door 22 is separated from the first door 21, And rotates about axis 222 and starts to open.

When the door handle 221 is pulled in a state in which the grip portion 2411 is pressed, the second ring member 2330 rotates in the first rotation direction R1 by being pressed by the second locking projection 22112. [

The second annular member 2330 is rotated in the first rotation direction R1 so that the second annular hole 2331H and the second engagement protrusion 22112 of the second annular member 2330 are separated.

The second ring member 2330 is engaged with the second locking protrusion 22112 by rotating in the first rotation direction R1 and is separated from the second locking protrusion 22112 by rotating in the second rotation direction R2. .

15E, the door handle 221 is further pulled toward the front of the main body 10, so that the second hook member 2330 and the second hook protrusion 22112 are separated from each other, The member 2330 rotates in the second rotation direction R2 by the elastic force of the fifth elastic member T5.

As a result, the second door 22 is opened by disengaging the second lock unit 2300 and the first lock unit 2200.

The first ring member 2120 is interfered with the first latching portion 2222 so that the second ring member 2120 is separated from the first door 21 by the second hooking protrusion 22111, The rotation of the first door 21 in the rotation direction R2 is blocked so that the first door 21 can be fixed to the main body 10. [

Therefore, when the door handle 221 is pulled toward the front of the main body 10 in a state in which the grip portion 2411 is pressed, the first door 21 can be kept closed, and the second door 22 ) Will be opened.

The locking device 2000 according to another embodiment of the present disclosure described above is configured to include the first and second loop members 2120 and 2330 through the first sliding member 2220 and the first and second stoppers 2230 and 2240, Can be selectively fixed to the first and second locking projections 22111 and 22112 to prevent the first door 21 and the second door 22 from being opened in a double manner.

Hereinafter, a locking device according to another embodiment of the present disclosure will be described in detail with reference to FIGS. 16 to 19. FIG.

FIG. 16 is a perspective view of a locking device 6000 according to another embodiment of the present disclosure, and FIGS. 17 and 18 are exploded perspective views of the locking device 6000 shown in FIG. 19 is an exploded perspective view showing the main loop unit 6100, the first lock unit 6200, and the second lock unit 6300 of the lock device 6000 shown in Fig. 16 in the other direction.

16 to 19, the locking device 6000 according to another embodiment of the present disclosure includes a main ring unit 6100 installed in the main body 10 (see Fig. 3B), a first door 21 (Refer to FIG. 3C) installed in the first locking unit 6200 and selectively coupled to the first locking unit 6200. The first locking unit 6200 is installed in the second door 22 A second locking unit 6300 and an operation lever 6400 for separating the second door 22 from the first door 21 by pressurization.

The operation lever 6400 is provided on the door handle 221 (see FIG. 3C) and by separating the first lock unit 6200 and the second lock unit 6300 by pressurization, the first door 21 and the second door 2 door 22 can be detached. That is, when the user presses the operation lever 6400, the second lock unit 6300 can be separated from the first lock unit 6200 and the second door 22 can be separated from the first door 21 .

The main ring unit 6100 is installed to face the first door 21 on the front panel 11 (see Fig. 21) of the main body 10. [

The main ring unit 6100 includes a main body 6110 provided on the front panel 11, a main ring 6120 provided on the body 6110 and protruding forward and a pair of main arms 6120 provided on the lower side of the main ring 6120 (6130).

A coupling hole 6100H may be formed between the body 6110 and the main ring 6120. For this purpose, the main ring 6120 may be formed in a substantially U shape.

The pair of pressing members 6130 are attached to the main ring 6120 under the main ring 6120 so as to correspond to a pair of the support protrusions 6232 of the first lock unit 6200 of the first door 21, Respectively. Specifically, the pair of pressing members 6130 press the pair of support protrusions 6232 to block rotation of the pair of support protrusions 6232 in one direction.

The pair of pressing members 6130 are vertically movable with respect to the body 6110 and are provided to apply a constant force to the pair of supporting protrusions 6232. One end of the pair of pressing members 6130 facing the first door 21 is provided with an inclined portion 6131a (see FIG. 20). When the first door 21 is closed, A pair of the support protrusions 6232 of the first lock unit 6200 of the main body 21 can be positioned below the pair of pressing members 6130 along the inclined surface 6131a. The pair of pressing members 6130 can move up and down and can apply a constant force to the pair of pressing members 6130 so that a pair of holding protrusions 6232 of the first locking unit 6200, So as to maintain a constant position. The portions of the pair of pressing members 6130 that contact the pair of support protrusions 6232 have a certain rigidity so as to guide the movement of the pair of support protrusions 6232. [

The pair of pressing members 6130 may be formed of a torsion spring.

20 is a perspective view showing a case where a pair of pressing members 6130 of the main ring unit 6100 of the locking device 6000 of Fig. 16 is implemented by a torsion spring.

20, the pair of pressing members 6130 protrude forward of the body 6110 and are engaged with the pair of pressing protrusions 6232 of the first locking unit 6200, First and second torsion spring portions 6132 and 6133 connected to the first and second pressing portions 6131 and 6131 and a connecting portion 6133 connecting the other ends of the first and second torsion spring portions 6132, . ≪ / RTI >

The first pressing portion 6131 extends from one end of the first torsion spring portion 6132 and an inclined portion 6131a is provided at the tip of the first pressing portion 6131. [ The second pressing portion 6131 is formed in the same manner as the first pressing portion 6131. That is, the second pressing portion 6131 extends from one end of the second torsion spring portion 6132, and an inclined portion 6131a is provided at the tip of the second pressing portion 6131. The inclined portion 6131a is provided so as to be inclined downwardly from the front end of the first and second pressing portions 6131 downward. When the pair of support protrusions 6232 of the first lock unit 6200 come into contact with each other, the first and second pressing portions 6131 of the pair of pressing members 6130 are pressed by the first and second torsion springs 6132, And moves up and down with respect to the portion 6132, so that a constant force can be applied to the pair of support protrusions 6232. [

The first pressing portion 6131 and the second pressing portion 6131 are formed so as to be spaced apart from each other by a predetermined distance in correspondence with the pair of supporting protrusions 6232 of the first locking unit 6200. The first torsion spring portion 6132 and the second torsion spring portion 6132 are also spaced apart from the first pressing portion 6131 and the second pressing portion 6131.

A pressing member receiving portion 6111 is provided on the rear surface of the body 6110 so that a pair of pressing members 6130 can be installed on the body 6110. On the front surface of the body 6110, A pair of pressing member insertion grooves 6115 communicating with the pressing member insertion groove 6111 are formed. Therefore, when the pair of pressing members 6130 are inserted into the pressing member receiving portions 6111 of the body 6110, the first and second pressing portions 6131 are inserted through the pair of pressing member insertion grooves 6115, And the first and second torsion spring portions 6132 and 6133 are positioned in the pressing member receiving portion 6111. [

On the rear surface of the body 6110, a protective cover 6140 for protecting the pair of pressing members 6130 can be provided. The cover 6140 can be secured to the body 6110 using fastening elements such as bolts or screws. 19, in order to fix the protective cover 6140 to the body 6110, two female threads 6113 are provided on the body 6110, and the protective cover 6140 is provided with two through- A hole 6141 is formed.

The first locking unit 6200 includes a first holder 6210 installed on the first door 21, a first hook member 6220 rotatably installed on the first holder 6210, So that the first rotation shaft 6240 and the first hook member 6220 rotatably engaged with the first hook member 6220 are rotated in the first rotation direction R1 engaged with the main ring unit 6100, And a first elastic member 6250 for applying an elastic force to the hook member 6220.

The first elastic member 6250 may be a compression spring.

The first holder 6210 includes a first opening 6210H and a first hook member 6220 is rotatably installed in the first opening 6210H.

The first rotating shaft 6240 is coupled to the first holder 6210 so as to penetrate the first opening 6210H and horizontally inserted into the first hook member 6220 installed in the first opening 6210H. Thereby, the first hook member 6220 can be rotated at a predetermined angle in the first opening 6210H.

The first hook member 6220 includes a first hook portion 6221 and a first hook portion 6221 formed at one end so as to be engaged with the main hook 6120 of the main hook unit 6100, And the first to-be-urged portion 6222 includes a first to-be-urged portion 6222 formed at the opposite end to the first to-be-urged portion 6222, (6223) are formed.

In addition, a first engaging projection 6224 is formed on the lower side of the first hook 6221 to engage with one end of the first elastic member 6250.

A second engaging projection 6212 is formed on the inner side of the first holder 6210 to engage the other end of the first elastic member 6250.

Accordingly, the first hook member 6220 can be rotated in the first rotation direction R 1 by receiving the elastic force from the first elastic member 6250. When the first hook member 6220 rotates and the first hook member 6221 is inserted into the coupling hole 6100H of the main loop unit 6100 and hooked to the main loop 6120, the first hook member 6220 And the main ring unit 6100 can be combined.

The second locking unit 6300 includes a second holder 6310 provided on the second door 22, a second hook member 6320 and a second hook member 6320 rotatably mounted on the second holder 6310, And a second elastic member 6340 that applies an elastic force to the second hook member 6320 so as to rotate in the first rotation direction R1.

The second elastic member 6340 may be a compression spring.

The second holder 6310 includes the second opening 6310H and the second hook member 6320 is rotatably installed in the second opening 6310H.

The second rotary shaft 6330 is coupled to the second holder 6310 so as to penetrate the second opening 6310H and horizontally inserted into the second hook member 6320 installed in the second opening 6310H. Thereby, the second hook member 6320 can rotate at a predetermined angle in the second opening 6310H.

The second hook member 6320 includes a hook-shaped second hook portion 6321 and a second hook portion 6321 formed at one end thereof so as to press the first to-be-urged portion 6222 of the first hook member 6220. [ And a second to-be-urged portion 6322 formed at the other end opposite to the first to-be-urged portion 6322. A second through-hole 6322 is formed between the second hook portion 6321 and the second to- Holes 6323 are formed.

In addition, a third engaging projection 6324 (see FIG. 21) to which one end of the second elastic member 6340 is coupled is formed on the lower side of the second hook portion 6321.

In addition, a fourth engaging projection 6312 is formed on the inner side of the second holder 6310 so that the other end of the second elastic member 6340 is engaged.

The second hook member 6320 can be rotated in the first rotation direction R1 by receiving the elastic force from the second elastic member 6340 and the first and second doors 21 and 22 are closed The first hook member 6220 can be elastically supported so that the first hook member 6220 is separated from the main hook unit 6100. [

For this, the elastic force of the second elastic member 6340 is preferably larger than the elastic force of the first elastic member 6250.

Specifically, the second hook member 6320 can be rotated in the first rotation direction R 1 by receiving the elastic force from the second elastic member 6340. The second hook portion 6321 of the second hook member 6320 presses the first to-be-urged portion 6222 of the first hook member 6220 in the first rotation direction R1.

The second hook portion 6321 of the second hook member 6320 presses the first hook member 6220 in a direction opposite to the elastic force of the first elastic member 6250, Does not rotate in the first rotation direction R1.

The first hook member 6220 is elastically supported by the second hook member 6320 so that the first hook member 6220 rotates at a predetermined angle in a second rotation direction R2 opposite to the first rotation direction R1, Can be fixed.

When the first hook member 6220 is pressed by the second hook portion 6321 of the second hook member 6320, the second hook portion 6320 is rotated in the second rotation direction R2 opposite to the first rotation direction R1, A separate stopper (not shown) in which the first hook member 6220 interferes can be provided in the first holder 6210. [

The second hook member 6320 elastically supports the first hook member 6220 by means of the first hook member 6220 which is to be rotated by the first elastic member 6250 in the first rotation direction R1 Means that the second hook member 6320 supports the first hook member 6220 through the elastic force of the second elastic member 6340 such that the first hook member 6320 does not rotate in the first rotation direction R1 but maintains its position do.

The second hook member 6320 that elastically supports the first hook member 6220 by rotating in the first rotation direction R1 by the second elastic member 6340 also rotates in the first rotation direction R1 by a predetermined angle A separate stopper (not shown) which interferes with the second hook member 6320 can be provided in the second holder 6310 so as not to rotate more than the second stopper 6320. [

The above-described double opening prevention members 6230 and 6260 include a rotation ring member 6230 rotatably installed in the first holder 6210 and a first rotation member 6230 in which the rotation ring member 6230 engages with the second hook member 6320. [ And a third elastic member 6260 for applying an elastic force to the rotation ring member 6230 so as to rotate in the direction R1.

The third elastic member 6260 may be a compression spring.

The double opening prevention members 6230 and 6260 maintain the state where the second door 22 is coupled to the first door 21 when the operation lever 6400 is pressed in the state that the first door 21 is opened , It is possible to prevent the second door 22 from being opened when the first door 21 is opened.

The rotating hook member 6230 is installed at the opening 6210H of the first holder 6210 and is coupled to the first rotating shaft 6240 and can rotate coaxially with the first hook member 6220. [

The swing ring member 6230 includes a swing ring portion 6231 formed at one end adjacent to the second hook portion 6321 of the second hook member 6320 and a pair of swing arms 6231 formed at the other end opposite to the swing ring portion 6231 As shown in Fig.

A pair of support protrusions 6232 protrude from both ends of the rotation ring portion 6231 and a pair of support protrusions 6232 and 6231 are inserted between the pair of support protrusions 6232 and the rotation ring portion 6231 A third through hole 6233 is formed.

A first hook member 6220 can be disposed between the pair of support protrusions 6232.

In addition, the swing ring member 6230 includes a fifth engaging projection 6234 formed on at least one of the pair of support protrusions 6232.

The fifth engaging projection 6234 may protrude from the lower end of the support projection 6232. [

One end of the third elastic member 6260 is coupled to the fifth engagement projection 6234.

A sixth engaging projection 6213 is formed on the inner side of the opening 6210H of the first holder 6210 so that the other end of the third elastic member 6260 is engaged.

The rotation hook member 6230 can be rotated in the first rotation direction R1 by receiving elastic force from the third elastic member 6260 so that the rotation hook member 6231 can be rotated by the second hook member 6320, The rotation hook member 6230 and the second hook member 6320 can be engaged with each other.

The pair of support protrusions 6232 of the rotation ring member 6230 is rotated in the main ring unit 6230 so that the rotation ring member 6230 does not rotate in the first rotation direction R1 6100 by a pair of pressing members 6130.

The rotating hook member 6230 is urged by the second hook member 6320 when it is separated from the pair of pressing members 6130 by opening the first door 21.

The second hook member 6320 elastically supports the rotation hook member 6230 so that the rotation hook member 6230 which is to be rotated by the third elastic member 6260 in the first rotation direction R1 The second hook member 6320 supports the rotation hook member 6230 through the elastic force of the second elastic member 6340 so as to maintain its position without rotating in the first rotation direction R1.

For this, the elastic force of the second elastic member 6340 is preferably larger than the elastic force of the third elastic member 6260.

The elastic force of the second elastic member 6340 is applied to the first elastic member 6250 so that the second hook member 6320 can elastically support both the first hook member 6220 and the rotation ring member 6230. [ Can be set to be larger than the sum of the elastic force and the elastic force of the third elastic member (6260).

The operation lever 6400 is installed on the door handle 221 and can be operated by pressing to separate the second door 22 from the first door 21.

The second hook member 6320 can be rotated in the second rotation direction R2 in which it is separated from the rotation ring member 6230 by being pressed by the operation lever 6400. [

The operation lever 6400 includes a lever body 6410, a lever case 6420 in which the lever body 6410 is rotatably installed, a lever shaft 6430 inserted in the lever body 6410, and a lever body 6410 And a lever elastic member 6440 for applying an elastic force.

The lever body 6410 includes a gripping portion 6411 that can be gripped by the user and a pressing portion 6412 extending from one end of the gripping portion 6411. [

The pressing portion 6412 protrudes toward the second hook member 6320 and contacts the second to-be-urged portion 6322 of the second hook member 6320. [

A lever shaft hole 6413 through which the lever shaft 6430 is inserted is formed between the grip portion 6411 and the pressing portion 6412.

The lever shaft hole 6413 is formed to penetrate the lever body 6410 in the vertical direction. When the lever shaft 6430 is inserted into the lever shaft hole 6413, the lever body 6410 can rotate left and right on the horizontal plane around the lever shaft 6430.

The lever body 6410 rotates about the lever axis 6430 and the pressing portion 6412 rotates around the lever axis 6430 so that the pressing portion 6412 is pressed against the second pressable portion of the second hook member 6320 6322).

The lever case 6420 includes a first case 6421 and a second case 6422 coupled to a lower surface of the first case 6421. [

The first case 6421 has a penetration portion 6421H in which the pressing portion 6412 of the lever body 6410 is received and the lever shaft 6430 is coupled to the second case 6422. [

The lever elastic member 6440 applies an elastic force to the lever body 6410 so that the lever body 6410 rotates in a direction opposite to the direction in which the second pressured portion 6322 is pressed.

The lever elastic member 6440 may be a torsion spring.

The user can press the grip portion 6411 with a force larger than the elastic force of the lever elastic member 6440 to rotate the lever body 6410 so that the pressing portion 6412 presses the second hook member 6320 have.

The second to-be-urged portion 6322 of the second hook member 6320 which is urged by the urging portion 6412 of the lever body 6410 includes the sliding surface 6322S in contact with the urging portion 6412. [

When the lever body 6410 rotates as the gripper portion 6411 is pressed, the sliding surface 6322S is pressed by the pressing portion 6412 so that the second hook member 6320 rotates in the second rotation direction R2 .

When the grip portion 6411 of the operation lever 6400 is pressed in the state that the first and second doors 21 and 22 are closed, the second hook member 6320 rotates in the second rotation direction R2, Member 6330 as shown in Fig.

However, the structure in which the second hook member 6320 is rotated in the second rotation direction R2 through the operation of the operation lever 6400 can be formed in various structures other than the above-described structure.

As shown in Fig. 1, the operation lever 6400 may be installed in the door handle 221. [

In this case, the user can open the second door 22 by pulling the door handle 221 in a state in which the grip portion 6411 of the operation lever 6400 is pressed.

As another example, although not shown, the operation lever 6400 may be installed on one side of the door handle 221 facing the front surface of the second door 22 so as to face the front surface of the second door 22.

In this case, the user can press the grip portion 6411 of the operation lever 6400 and pull the second door 22 in the opening direction by using the door handle 221.

As another example, although not shown, the operation lever 6400 may be provided on the control panel 30 or the like without being provided on the door handle 221. [ In this case, the user can open the second door 22 by pulling the door handle 221 in a state in which the grip portion 1411 of the operation lever 6400 is pressed.

21 is a view showing the locking device 6000 in a state in which the first and second doors 21 and 22 are closed.

21, in a state in which the first and second doors 21 and 22 are closed, the rotation ring member 6230 is configured such that the pair of support protrusions 6232 are engaged with the pair of main ring units 6100 The position is maintained by being pressed by the pressing member 6130 of the pressing member.

The second hook member 6320 is fixed to the first hook member 6220 through the second hook portion 6321 so that the first hook member 6220 is not engaged with the main hook 6120 of the main hook unit 6100 1 pressurizing portion 6222 is pressed.

In addition, the second hook portion 6321 of the second hook member 6320 remains engaged with the rotation hook portion 6231 of the rotation hook member 6230.

A second hook member 6320 provided on the second door 22 is engaged with the rotation hook member 6230 provided on the first door 22 in a state in which the first and second doors 21 and 22 are closed, The second door 22 is prevented from rotating with respect to the first door 21 and the first door 21 is rotatable from the main body 10. [

22A is a view showing the locking device 6000 in a state in which the first door 21 is opened.

The first hook member 6220 is not engaged with the main hook unit 6100 and the second hook member 6320 is engaged with the rotation hooks Member 6230, as shown in Fig.

Therefore, when the user pulls the door handle 221, the first door 21 rotates about the first hinge shaft 211 and opens when the second door 22 is closed.

When the first door 21 is opened, the pair of support protrusions 6232 of the rotation ring member 6230 are separated from the pair of pressing members 6130 of the main ring unit 6100. Thus, the swing ring member 6230 is resiliently supported by the second elastic member 6340 in a state of being engaged with the second hook member 6320.

22B is a view showing the operation of the locking device 1000 when the operating lever 6400 is pressed while the first door 21 is opened.

22B, when the grip portion 6411 of the operation lever 6400 is pressed in the state in which the first door 21 is opened, the lever body 6410 rotates and the pressing portion 6412 rotates about the second hook The second to-be-urged portion 6322 of the member 6320 is pressed.

When the sliding surface 6322S of the second to-be-urged portion 6322 of the second hook member 6320 is pressed by the urging portion 6412 of the lever body 6410, the second hook member 6320 is rotated in the second rotation And rotates in the direction R2.

As described above, since the rotary hook member 6230 is elastically supported by the second elastic member 6340 in a state of being engaged with the second hook member 6320 in the state in which the first door 21 is opened, When the member 6320 rotates in the second rotation direction R2, the rotation ring member 6230 is engaged with the second hook member 6320 by the third elastic member 6260 in the first rotation direction R1 ).

The rotary hook member 6230 provided on the first door 21 and the second hook member 6320 provided on the second door 22 can be maintained in a coupled state.

Therefore, even when the operation lever 6400 is pressed in the state that the first door 21 is opened, it is possible to prevent the second door 22 from being opened. As a result, the first and second doors 21, It can be prevented from being opened.

23A and 23B are diagrams showing the operation of the locking device 6000 in the process of opening the second door 22.

23A, when the grip portion 6411 of the operation lever 6400 is pressed in a state where both the first and second doors 21 and 22 are closed, the lever body 6410 rotates and the pressing portion 6412 press the second to-be-urged portion 6322 of the second hook member 6320.

When the sliding surface 6322S of the second to-be-urged portion 6322 is pressed by the pressing portion 6412 of the lever body 6410, the second hook member 6320 rotates in the second rotational direction R2.

In the state where the first door 21 is closed, the rotation ring member 6230 is held in its position by the pair of supporting protrusions 6232 being pressed against the pair of pressing members 6130 of the main ring unit 6100.

Thus, when the second hook member 6320 is rotated in the second rotation direction R2, the second hook member 6320 can be separated from the rotation ring member 6230. [

As the second hook member 6320 rotates in the second rotation direction R2, the first hook member 6220 elastically supported by the second hook member 6320 is engaged with the first elastic member 6250 Thereby rotating in the first rotational direction R1.

When the first hook member 6220 rotates in the first rotational direction R1, the first hook portion 6221 of the first hook member 6220 is caught by the main hook 6120 of the main hook unit 6100 , The first hook member 6220 is engaged with the main loop unit 6100.

23B, when the door handle 221 is pulled in a state in which the grip portion 6411 of the operation lever 6400 is pressed, the second door 22 is separated from the first door 21 And is rotated about the second hinge axis 222 to be opened.

The first door 21 is fixed to the main body 10 by the first hook member 6220 being coupled to the main ring unit 6100 so that when the second door 22 is opened, Can be prevented from being opened.

In addition, the operation lever 6400 can selectively disengage the second hook member 6320 from the rotary hook member 6230 according to the degree to which the grip portion 6411 is pressed.

For example, when the grip portion 6411 is pressed from 0 mm to 2.5 mm on the basis of the distance that the tip of the grip portion 6411 moves toward the lever case 6420 by pressurization, the second hook member 6320 Even if it rotates in the second rotational direction R2, it can be set to remain coupled with the rotation ring member 6330. [ When the door handle 221 is pulled in this state, the first door 21 is opened.

The second hook member 6320 and the rotation hook member 6230 maintain the engaged state while the first hook member 6220 is engaged with the main hook unit 6220 6100), so that the first and second doors 21, 22 can be kept closed. In this state, the first door 21 is fixed to the main body 10, and the second door 22 is fixed to the first door 22, so that even if the door handle 221 is pulled, the first and second doors 21, 22) are not opened.

The second hook member 6320 can be detached from the rotary hook member 6230 so that the second door 22 can be opened when the grip portion 6411 is pressed by 4.0 mm to 8.0 mm.

A pair of pressing members 6130 of the main ring unit 6100 with which the pair of supporting protrusions 6232 of the rotating ring member 6230 of the first locking unit 6200 come in contact with the body 6110 The first locking unit 6200 installed in the first door 21 and the main locking unit 6100 installed in the main body 10 are assembled so as to be able to apply a constant force, The rotating ring member 6230 of the first locking unit 6200 can always be held at a constant position by the pair of pressing members 6130 of the main ring unit 6100. [ Accordingly, the first door 21 and the second door 22 can be smoothly opened and closed.

While the pair of pressing members 6130 of the main ring unit 6100 has been described as a torsion spring, the pair of pressing members 6130 is not limited thereto. The pair of pressing members 6130 can move up and down with respect to the body 6110 so as to keep the rotating ring member 6230 at a predetermined position and can be moved in various directions as long as a constant force can be applied to the rotating ring member 6230 Structure.

An example of a main ring unit having a pair of pressing members of different structures is shown in Fig.

24, the main ring unit 6100 'includes a body 6110' installed on the front panel 11 of the main body 10, a main ring 6120 'installed on the body 6110' And a pair of pressing members 6150 provided below the main ring 6120. 24, only one of the pair of pressing members 6150 is shown.

The body 6110 'and the main loop 6120 can be formed to be the same as or similar to those of the above-described embodiment, and thus the detailed description is omitted.

The pair of pressing members 6150 are formed to correspond to the pair of supporting protrusions 6232 of the first locking unit 6200 of the first door 21 described above. Specifically, the pair of pressing members 6150 press the pair of support protrusions 6232 of the rotation ring member 6230 to block rotation of the pair of support protrusions 6232 in one direction.

Specifically, the pair of pressing members 6150 may include a pressing portion 6151 and an elastic member 6152.

The pressing portion 6151 is provided so as to be movable up and down along the pressing portion guide groove 6111 'formed on the body 6110' and is not deformed even when it comes in contact with the pair of the supporting protrusions 6232, . An end of the pressing portion 6151, that is, one end facing the first door 21 is provided with an inclined portion 6151a, and the bottom surface is formed in a flat surface.

The elastic member 6152 is provided on the pressing portion guide groove 6111 'on the upper side of the pressing portion 6151 so as to elastically support the pressing portion 6151 in the downward direction. Accordingly, the pressing portion 6151 can be elastically supported by the elastic member 6152 and move up and down with respect to the body 6110 ', and a constant force can be applied to the pair of support protrusions 6232. [ The elastic member 6152 may be formed of a compression spring.

A pair of supporting protrusions 6232 of the first locking unit 6200 of the first door 21 is pressed against the pair of pressing members 6150 of the main fixing unit 6100 when the first door 21 is closed. And may be positioned under the pressing portion 6151. The pressing portion 6151 of the pressing portion 6151 may be moved along the inclined surface 6151a.

25 is a cross-sectional view showing a dishwasher 3000 to which a locking device 1000, 6000 according to an embodiment of the present disclosure is applied.

The locking devices 1000 and 6000 according to one embodiment of the present disclosure may also be applied to the dishwasher 3000 having the first and second doors 3021 and 3022 as double doors.

The dishwasher 3000 includes a main body 3010 that forms an outer appearance and first and second doors 3021 and 3022 coupled to the main body 3010.

Inside the main body 3010, a washing chamber 3010S which is a space for washing dishes is provided.

A plurality of baskets 3041 and 3042 are disposed in the washing chamber 3010S to accommodate the dishes.

The plurality of baskets 3041 and 3042 may include a first basket 3041 and a second basket 3042.

The first basket 3041 is disposed on the upper side of the second basket 3042 inside the cleaning chamber 3010S.

A first injection nozzle 3031 is disposed above the first basket 3041 and a second injection nozzle 3032 is disposed below the second basket 3042. The first and second baskets 3041, And a third injection nozzle 3033 may be disposed between the first injection nozzle 3042 and the third injection nozzle 3033.

The first injection nozzle 3031 can clean the tableware housed in the first basket 3041 by spraying high pressure cleaning water from the upper side of the first basket 3041 toward the first basket 3041, The second basket 3032 can clean the dishes housed in the second basket 3042 by spraying high pressure cleaning water from the lower side of the first basket 3041 toward the first basket 3041. [ In addition, the third injection nozzle 3033 can spray the washing water toward the lower portion of the first basket 3041 and the upper portion of the second basket 3042.

Since most of the structure of the dishwasher 3000 shown in FIG. 25 is the same as or similar to the conventional structure, a description of the overlapping structure is omitted.

25, the cleaning chamber 3010S is provided with a first basket 3041 on the upper side of the third injection nozzle 3033 with the third injection nozzle 3033 disposed at the center as a reference, A second basket 3042 is disposed below the nozzle 3033.

The open front face of the cleaning chamber 3010S may be opened and closed by a first door 3021 rotatably connected to the main body 3010. [

The first door 3021 has a size corresponding to the shape of the front surface of the washing chamber 3010S so as to open and close the entire washing chamber 3010S and has an opening connected to the washing chamber 3021. [

The second door 3022 is rotatably coupled to the first door 3021 so that the opening of the first door 3021 can be opened and closed and the door handle 30221 is coupled to the upper side.

The entire area of the cleaning chamber 3010S can be opened by opening the first door 3021 so that the dishes can be put into the first and second baskets 3041 and 3042 or the first and second baskets 3041, and 3042, respectively.

In addition, when the amount of tableware to be cleaned is small, a part of the washing chamber 3010S can be opened by opening only the second door 3022, thereby placing the tableware in the first basket 3041, And the third injection nozzles 3031 and 3033 are operated, the cleaning of the tableware can be performed efficiently.

The first and second doors 3021 and 3022 described above are similar in structure to the first and second doors 21 and 22 of the oven 1 shown in Figs. 3A to 3C, Is omitted.

The dishwasher 3000 includes a locking device 1000 or 6000 for selectively fixing the first and second doors 3021 and 3022 so that the first and second doors 3021 and 3022 selectively rotate.

The locking devices 1000 and 6000 include main ring units 1100 and 6100 installed in the main body 3010, a first locking unit installed in the first door 3021 and selectively engaged with the main ring units 1100 and 6100 And a second door unit 30221 provided on the second door 3022 to selectively engage the first and second lock units 1200 and 6200 and the door handle 30221, And an operation lever 1400, 6400 for separating the second door 3022 from the first door 3021. [

Through this locking device 1000, 6000, the first door 3021 and the second door 3022 can be selectively opened.

In addition, the second door 3022 is prevented from being opened in the state in which the first door 3021 is opened through the locks 1000, 6000, and the second door 3022 is prevented from being opened in the second door 3022 in the opened state, 3021 can be prevented from being double opened.

The specific structure in which the first and second doors 3021 and 3022 are prevented from being double opened through the lock devices 1000 and 6000 is the same as that of the lock devices 1000 and 6000 described with reference to Figures 3A to 9B and 16 to 23B, .

In addition, the locks 1000, 6000 applied to the dishwasher 3000 can be replaced by the locks 2000 according to another embodiment of the present disclosure shown in FIG.

FIG. 26 is a perspective view of a refrigerator 4000 to which a locking device according to an embodiment of the present disclosure is applied, FIG. 27 is a perspective view showing a state in which a first door 4110 of the refrigerator 4000 shown in FIG. 26 is opened, 28 is a perspective view showing a state in which the second door 4120 of the refrigerator 4000 shown in Fig. 26 is opened.

The locking devices 1000 and 6000 according to one embodiment of the present disclosure can be applied to the refrigerator 4000 having the first and second doors 4110 and 4120 as double doors.

The refrigerator 4000 has a storage chamber 4010S provided inside the body 4010 forming the outer appearance and can store foods in the low temperature storage chamber 4010S.

A plurality of storage compartments may be provided in the main body 4010, and a plurality of storage compartments may be respectively opened and closed by doors.

26, the refrigerator 4000 includes first and second doors 4110 and 4120 rotatably coupled to a first hinge shaft 4101 provided at one side of the main body 4010, a main body 4010, And a third door 4200 rotatably coupled to the second hinge shaft 4201 provided on the other side of the second hinge shaft 4201.

As described above, the main body 4010 may include a plurality of storage rooms, and the plurality of storage rooms may be divided into a refrigerating room and a freezing room.

The plurality of storage rooms can be opened and closed by the first and second doors 4110 and 4120 and the third door 4200, respectively.

In FIGS. 27 and 28, for the sake of convenience, one storage room 4010S of the plurality of storage rooms is opened by the first and second doors 4110 and 4120. FIG.

Inside the storage room 4010S, a plurality of shelves 4011, on which foods can be placed, are disposed.

The open front face of the storage chamber 4010S may be opened and closed by a first door 4110 rotatably connected to the body 4010. [

The first door 4110 includes an opening connected to the storage room 4010S and a plurality of auxiliary shelves 4012 may be disposed inside the opening of the first door 4110. [

The second door 4120 is rotatably coupled to the first door 4110 so as to open and close the opening of the first door 4110 and the door handle 4121 is coupled to one side.

The first and second doors 4110 and 4120 can be coupled to the first hinge shaft 4101 to pivot.

The first and second doors 4110 and 4120 are selectively opened so that the user can take out the food stored in the shelf 4011 or selectively take out the food stored in the auxiliary shelf 4012. [

As a result, the cold air of the refrigerator 4000 can be prevented from flowing unnecessarily.

The refrigerator 4000 includes a locking device 1000 or 6000 for selectively fixing the first and second doors 4110 and 4120 so that the first and second doors 4110 and 4120 selectively rotate.

The locking devices 1000 and 6000 include main ring units 1100 and 6100 installed in the main body 4010, a first locking unit installed in the first door 4110 and selectively engaged with the main ring units 1100 and 6100 A second lock unit 1300 or 6300 provided on the second door 4120 and selectively engaging with the first lock unit 1200 or 6200 and a second lock unit installed on the door handle 4121, And an operation lever 1400, 6400 for separating the second door 4120 from the first door 4110.

Through this locking device 1000, 6000, the first door 4110 and the second door 4120 can be selectively opened.

In addition, the second door 4120 is prevented from being double opened when the first door 4110 is opened through the locks 1000 and 6000, and the second door 4120 is opened while the second door 4120 is opened. 4110 can be prevented from being double opened.

The specific structure in which the first and second doors 4110 and 4120 are prevented from being double opened through the lock devices 1000 and 6000 is the same as that of the lock devices 1000 and 6000 described with reference to Figures 3A to 9B and 16 to 23B, .

In addition, the locks 1000, 6000 applied to the refrigerator 4000 may be replaced with the locks 2000 according to another embodiment of the present disclosure shown in FIG.

The third door 4200 may also be constructed as a double door and may have a structure similar to the first and second doors 4110 and 4120 selectively opened and closed through the locks 1000 and 6000.

29 is a perspective view of a washing machine 5000 to which a locking device 1000 or 6000 according to an embodiment of the present disclosure is applied and FIG. 30 is a perspective view of the washing machine 5000 shown in FIG. 29 in which a first door 5021 is opened And FIG. 31 is a perspective view showing a state in which the second door 5022 of the washing machine 5000 shown in FIG. 29 is opened.

The locking devices 1000 and 6000 according to one embodiment of the present disclosure may be applied to a washer 5000 having first and second doors 5021 and 5022 as double doors.

The washing machine 5000 includes a main body 5010 for forming an outer appearance, a water tank (not shown) provided inside the main body 5010, and a washing tub 5040 rotatably disposed inside the water tank.

In addition, a control panel 5030 is disposed above the main body 5010.

The washing machine 5000 can wash laundry contained in the washing room 5040S inside the washing tub 5040 by friction with washing water by rotating the washing tub 5040. [

The laundry 5040S may be opened forward through an opening formed in the front surface of the main body 5010 and the opened front of the laundry 5040S may be opened and closed by a first door 5021 rotatably connected to the main body 5010. [ .

The first door 5021 is formed in a shape and size corresponding to the shape of the front surface of the laundry room 5040S so as to open and close the entire laundry room 5040S and has an opening connected to the laundry room 5040S.

The opening of the first door 5021 is configured to be smaller than the front surface of the laundry room 5040S into which the laundry is input.

The first door 5021 is rotatably coupled to the first hinge shaft 50211 coupled to the main body 5010 so that the entirety of the laundry room 5040S can be opened and closed.

The second door 5022 is rotatably coupled to the first door 5021 so as to open and close the opening of the first door 5021 and can rotate around the second hinge shaft 50222.

Accordingly, the user can open the first door 5011 to open the entire laundry room 5040S, thereby putting the laundry into the laundry room 5040S, or taking out the laundry after the laundry has been completely washed.

Also, in the course of performing the washing operation by the washing machine 5000, the second door 5022 may be opened to further add the laundry to the laundry room 5040S.

The door handle 50221 is coupled to one side of the second door 522.

The washing machine 5000 further includes a locking device 1000 or 6000 for selectively fixing the first and second doors 5021 and 5022 so that the first and second doors 5021 and 5022 selectively rotate.

The locking devices 1000 and 6000 include main ring units 1100 and 6100 installed in the main body 5010, a first locking unit installed in the first door 5021 and selectively engaged with the main ring units 1100 and 6100 1200 and 6200 coupled to the second door 5022 and coupled to the second lock unit 1300 and 6300 and door handle 50221 selectively engaged with the first lock unit 1200 and 6200, And an operation lever 1400, 6400 for separating the second door 5022 from the first door 5021. [

Through this locking device 1000, 6000, the first door 5021 and the second door 5022 can be selectively opened.

In addition, the second door 5022 is prevented from being double opened when the first door 5021 is opened through the locks 1000 and 6000, and the second door 5022 is opened while the second door 5022 is opened. 5021 can be prevented from being double opened.

The specific structure in which the first and second doors 5021 and 5022 are prevented from being double opened through the lock devices 1000 and 6000 is the same as that of the lock devices 1000 and 6000 described with reference to FIGS. 3A to 9B and FIGS. .

In addition, the locks 1000, 6000 applied to the washing machine 5000 may be replaced by the locks 2000 according to another embodiment of the present disclosure shown in Fig.

As described above, the locking devices 1000, 2000, and 6000 according to the embodiment of the present invention described above can be installed in various ways such as an oven 1 having a double door, a dishwasher 3000, a refrigerator 4000, It can be applied to home appliances, and double doors can be prevented from being opened.

The cooking chamber 101 of the oven 1, the washing chamber 3010S of the dishwasher 3000, the storage chamber 4010S of the refrigerator 4000 and the washing chamber 5040S of the washing machine 5000 are connected to the lock The apparatus 1000, 2000, 6000 can be referred to as an accommodating space for appliances to which the appliances can be applied. The oven 1, the dishwasher 3000, the refrigerator 4000, May be varied in various ways.

The locking devices 1000 and 6000 according to one embodiment of the present disclosure may also include first hook members 1220 and 6220 through first through third elastic members 1250, 1340 and 1260 (6250, 6340 and 6260) The second hook members 1320 and 6320 and the rotating ring members 1230 and 6230 rotate in a specific direction and the elastic force of the elastic members is transmitted to the second hook members 1320 and 6320 through the operating levers 1400 and 6400 The plurality of elastic members are operated by the operation levers 1400 and 6400 to move the first hook members 1220 and 6220 to the first hook members 1220 and 6220, A second hook member 1320, 6320, a solenoid or a motor for rotating the rotation ring members 1230, 6230, or the like.

In addition, the plurality of elastic members T1 to T6 of the locking device 2000 according to another embodiment of the present disclosure may also be replaced by a solenoid, a motor, or the like.

While the various embodiments of the present disclosure have been described in detail above, it should be understood that each embodiment is not necessarily implemented alone, and the configuration and operation of each embodiment may be implemented in combination with at least one other embodiment.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure.

One; Oven
10; main body
101a, 101b; The first and second cooking chambers
21; The first door
22; The second door
30; Control panel
40a, 40b; The first and second racks
50: heater
60a, 60b: first and second circulation units
70: Suction unit
80; Cooling unit
90; Insulating member
1000, 2000, 6000; lock
3000; dish washer
4000; Refrigerator
5000; washer

Claims (20)

A main body having an accommodation space opened toward one side;
A first door rotatably coupled to the main body to open and close the receiving space, the first door having an opening connected to the receiving space;
A second door rotatably coupled to the first door to open and close the opening; And
And a locking device that causes the first door to be fixed or separated to the main body so that the first door and the second door selectively rotate or to fix or separate the second door to the first door,
The locking device comprises:
A main loop unit provided in the main body;
An operating lever for separating the second door from the first door by pressurization; And
And a double opening prevention member for keeping the second door fixed with respect to the first door when the operation lever is pressed in a state that the first door is opened. The method according to claim 1,
The locking device comprises:
A first locking unit provided on the first door and selectively coupled to the main ring unit; And
And a second locking unit provided on the second door and selectively coupled to the first locking unit,
Wherein the operating lever is installed on the second door and presses the second locking unit to separate the second locking unit from the first locking unit. 3. The method of claim 2,
The main ring unit includes:
A body provided on the body;
A main loop selectively coupled to the first locking unit; And
And a pair of pressing members installed on the lower side of the main loop and installed to be movable up and down with respect to the body. The method of claim 3,
Wherein the pair of pressing members are formed of a torsion spring,
One end of the torsion spring is fixed to the body,
And the other end of the torsion spring contacting the first locking unit includes an inclined portion. 3. The method of claim 2,
The first locking unit includes:
A first holder installed on the first door;
A first hook member rotatably installed in the first holder; And
And a first elastic member for applying an elastic force to the first hook member such that the first hook member rotates in a first rotation direction in which the first hook member engages with the main loop unit,
Wherein the second locking unit comprises:
A second holder installed on the second door;
A second hook member rotatably installed in the second holder; And
And a second elastic member for applying an elastic force to the second hook member such that the second hook member rotates in the first rotation direction,
And the second hook member elastically supports the first hook member such that the first hook member is separated from the main hook unit when the first and second doors are closed. 6. The method of claim 5,
The double-
A rotation ring member rotatably installed in the first holder; And
And a third elastic member for applying an elastic force to the rotation ring member such that the rotation ring member rotates in the first rotation direction in which the rotation hook member engages with the second hook member. The method according to claim 6,
The rotation ring member includes:
When the first and second doors are closed, they are pressed by the main loop unit in a state of being engaged with the second hook member,
And is resiliently supported by the second hook member when spaced apart from the main hook unit when the first door is opened. 8. The method of claim 7,
And the second hook member is rotated in the second rotation direction separated from the rotation ring member by being pressed by the operation lever. 9. The method of claim 8,
When the operation lever is pressed in a state in which the first and second doors are closed, the second hook member rotates in the second rotation direction and separates from the rotation ring member, and the first hook member rotates in the first rotation direction And engages with the main loop unit. 10. The method of claim 9,
When the first door is opened and the operation lever is pressed in a state where the second door is closed, the rotation ring member is rotated in the first rotation direction in a state of being engaged with the second hook member rotating in the second rotation direction Rotating, household appliances. The method of claim 10, wherein
Wherein the elastic force of the second elastic member is larger than the sum of the elastic force of the first elastic member and the elastic force of the third elastic member. 9. The method of claim 8,
Wherein the operating lever comprises:
A lever body having a grip portion and a pressing portion extending from one end of the grip portion; And
And a lever case having the lever body rotatably installed therein,
And the lever body is rotated so that the pressing portion presses the second hook member when the grip portion is pressed. 13. The method of claim 12,
Further comprising a door handle installed on the second door,
And the operating lever is provided on the door handle. 5. The method of claim 4,
The first locking unit includes first and second locking holes formed in the first door and first and second locking protrusions provided in the first locking hole and the second locking hole, A first holder,
The main ring unit includes:
A body installed in the main body; And
And a first ring member rotatably mounted on the body and rotating in a first rotation direction for engaging with the first engagement projection and a second rotation direction for separating from the first engagement projection,
Wherein the second locking unit comprises:
A second holder installed on the second door; And
And a second ring member rotatably installed in the second holder and rotating in a third rotational direction engaged with the second locking projection and a fourth rotational direction separated from the second locking projection,
Wherein the double-opening preventing member interferes with the second loop member in a state in which the first and second doors are closed, thereby blocking rotation of the second loop member in the fourth rotation direction. 15. The method of claim 14,
Wherein when the first and second doors are pressed by the operation lever in the closed state, interference with the second annular member is released and interferes with the first annular member so that the first annular member And blocks rotation in the second rotation direction. 15. The method of claim 14,
Wherein the double opening prevention member blocks operation of the operation lever when the first door is opened. A main body, a first door rotatably installed in the main body, the first door including an opening, and a second door rotatably installed in the first door to open and close the opening, Wherein the second door is fixed or separated to the main body or the second door is fixed or separated to the first door,
The locking device comprises:
A first locking unit installed on the first door, the first locking unit selectively locking the first door to the main body;
A second locking unit installed on the second door and selectively coupled to the first locking unit;
An operation lever installed on the second door to press the second lock unit to separate the second lock unit from the first door; And
And a double-locking mechanism for locking the second door to the first door when the operation lever is pressed while the first door is opened. 18. The method of claim 17,
The first locking unit includes:
A first holder installed on the first door;
A first hook member rotatably installed in the first holder; And
And a first elastic member for applying an elastic force to the first hook member such that the first hook member rotates in a first rotation direction in which the first hook member is engaged with the main loop unit of the main body,
Wherein the second locking unit comprises:
A second holder installed on the second door;
A second hook member rotatably installed in the second holder; And
And a second elastic member for applying an elastic force to the second hook member such that the second hook member rotates in the first rotation direction,
And the second hook member elastically supports the first hook member such that the first hook member is separated from the main hook unit when the first and second doors are closed. A main body, a first door rotatably installed in the main body, the first door including an opening, and a second door rotatably installed in the first door to open and close the opening, Wherein the second door is fixed or separated to the main body or the second door is fixed or separated to the first door,
The locking device comprises:
And a main ring unit installed in the main body and selectively coupling the first door,
The main ring unit includes:
A body provided on the body;
A main loop selectively coupled to a first locking unit provided on the first door; And
And a pair of pressing members installed on the lower side of the main ring to be vertically movable with respect to the body. 20. The method of claim 19,
Wherein the pair of pressing members are formed of a torsion spring,
One end of the torsion spring is fixed to the body,
Wherein the other end of the torsion spring which starts to contact the first locking unit of the first door includes an inclined portion.

Images